Pinyin: qi guān
ㄑㄧˊㄡㄨㄢ Athena Chu
Basic explanation
[wonders; A strange sight; Strange and rare things
A detailed explanation of the seven wonders of the world refers to a magnificent and beautiful rare sight or an exceptionally rare thing. Modern Chinese dictionary? title
Han's Lun Heng Bietong: "People must want to enter Beijing, which is amazing." Song and Qin Guan's poem "An old man can see a place with a grass temple" reads: "Oak leaves and hills are holding horses, and the wonders in the area are poor." Yuan Zongdao's Longhu in the Ming Dynasty: "Hong Ting, a green tree, is hidden on it, and it is also strange." Huashan's "Sea Road in the Mountain" IV: "So, under the snow of Lianfeng, a magnificent spectacle appeared." Basic information pinyin qí guān
Explain a magnificent, beautiful, rare sight, or a surprisingly rare thing.
For example, the ancient "Seven Wonders of the World"
The seven wonders of the world refer to the seven magnificent man-made landscapes in the ancient world:
Egyptian pyramids
Hanging gardens in Babylon
The Temple of themis in Ephesus, Turkey
Bronze statue of the sun god in Rhodes, Greece
Alexandria lighthouse, Egypt
Statue of Zeus in Olympia, Greece
Turkish Mausoleum of Mao Solas
The first person to put forward the idea of the Seven Wonders of the World was the 3rd century traveler Antipark.
There is also a saying that Byzantine scientist Phelan was in the 2nd century. Only vbcb copied the Seven Wonders of Ancient Books. Because most of the above miracles have been destroyed, later generations put forward the seven wonders of the world in the Middle Ages:
The Colosseum in Rome, Italy
The underground tomb of Alexandria, Libya
The great wall of China
Stonehenge
China Hongji Liulita
Leaning tower of Pisa, Italy
The natural wonders of Sophia Cathedral in Turkey In addition, American Lowell Thomas also put forward the seven natural wonders of the world:
Colorado Grand Canyon, USA
Victoria Falls in Africa
Alaska Glacier Bay
Ma Meng Cave, an underground cave in Kentucky, USA
Mount Everest, the highest peak in the world.
Lake Baikal, the deepest lake in the world.
Eight Wonders of Yellowstone National Park in the United States In addition, the Terracotta Warriors and Horses of China are also called "the eighth wonder of the world". Miracle Election 200 1 The "New Seven Wonders" Foundation (founded by Bernard Weber, a Frenchman, was founded in 200 1) launched the online election of the New Seven Wonders. From more than 200 scenic spots around the world, 77 scenic spots were selected for netizens to vote. So far, the last 2 1 scenic spots have been selected. The event ended on July 7, 2007 and was announced in Lisbon, Portugal, in the early morning of July 8. The Great Wall of China, the ancient city of Petra in Jordan, the statue of Christ in Brazil, the site of Machu Picchu in Inca, the pyramid of Kulkun in Ceacu, Chen Chi, the Colosseum in ancient Rome and the Taj Mahal have become the "new seven wonders" in the world. Among them, the Great Wall in Wan Li, China ranks first. The only remaining Egyptian pyramid of Giza among the ancient "Seven Wonders of the World" will naturally retain the status of a miracle, mainly because Egyptian officials said that it was an insult to ask the pyramids to compete for a place, so on the 8th, * * * produced the eight wonders of the world including the pyramids. In other words, the new list is:
The Great Wall of China
Petra Jordan
Christ statue in Rio de Janeiro, Brazil
Machu Picchu, Peru
Pyramid of Chichen Itza in Yucatan Peninsula, Mexico
Rome, Italy, Colosseum
Taj Mahal, India
Egypt, the pyramids of Giza
The pyramids of Giza are not the new seven wonders, but one of eight wonders of the world.
Details 2,500 years ago, Phoenician traveler Antipak wrote a dazzling list of seven wonders: the Egyptian Pyramid of Giza-one of the seven wonders of the world, the colossus of Zeus at Olympia-the second of the seven wonders of the world, the Temple of Artemis-the third of the seven wonders of the world, the Suo Mausoleum in Mosora-the fourth of the seven wonders of the world, the lighthouse of Alexandria-the fifth of the seven wonders of the world, and the hanging garden. The pyramids of Giza in Egypt are called one of the seven wonders of the ancient world. Most of the pyramids in Egypt were built in the third to sixth dynasties. Some pyramids with a history of more than 4,000 years are mainly distributed in the capital and Kyrgyzstan on the west bank of the upper reaches of the Nihe River. The left side of the Giza Pyramid belongs to King Kabra and the right side belongs to King Kuff, and there is a sphinx nearby. Building materials are mainly limestone, and some are flower rocks. Construction time: about 2700-2500 BC. Construction site: Giza Plateau near Cairo, Egypt. According to legend, before the third dynasty in ancient Egypt, both princes and ministers and ordinary people were buried in a rectangular tomb made of mud bricks, which the ancient Egyptians called "Mastaba". Later, a clever young man named Imhotep invented a new building method when designing a mausoleum for the Egyptian Pharaoh Zuosai. He replaced mud bricks with square stones picked from the ground, constantly revised the design scheme of building a mausoleum, and finally built a six-story trapezoidal pyramid-this is the prototype of the pyramid we see now. In ancient Egypt, pyramids were called hierarchical pyramids because they were trapezoidal and layered. This is a tall pyramid building with a square base and a triangle on each side, which looks like the Chinese character "gold", so we call it "pyramid". The tower mausoleum designed by Imhotep is the first stone mausoleum in Egyptian history. There are eighty pyramids in Egypt, the largest of which is the Pyramid of Giza, which was built around 2600 BC, and all of them were artificially built. How did the ancient Egyptians carve and build tombs with stones? The passage inside the mausoleum and the office in the mausoleum room are like a mystery. How did the ancient Egyptians build it? Zeus is the god of Greek gods. The statue of Zeus built for worship is the largest indoor statue in the world. The Temple of Zeus, where the statue of Zeus is located, is the birthplace of the Olympic Games, and some Olympic events have been held here. Construction Time: About In 457 Bc Construction Location: The Temple of Zeus in the ancient city of Olympia on the west coast of Greece was built in 470 BC and completed in 456 BC. It was designed by architect Lieben, and the statue of Zeus was carved by sculptor Pheidias. The temple is made of limestone with plaster on the surface and marble on the top. The temple is supported by Corinthian columns with a height of 34+07m, covering an area of 465,438+0.65,438+0m by 65,438+007.75m.. The Temple of Zeus is a Dullis-style building, and the whole statue and his clothes are all over it. In his right hand, he holds a victory statue made of ivory and gold, and in his left hand, he holds a scepter inlaid with glittering metal, on which an eagle stays. His throne is decorated with the Sphinx, the goddess of victory and mythical figures, excluding the throne. The statue alone is equivalent to a four-story modern building, so that Zeus' head sitting on the throne is almost close to the top of the temple. In 5 AD, the temple in Olympia was destroyed by fire. Although the statue of Zeus survived because it was transported to Constantinople, it was doomed in the end and was destroyed by fire in 462 AD. The colossus of Rhodes is the most mysterious of the seven wonders. The colossus was built at the entrance of Rhodes port. It is a bronze statue of Helius, the Greek sun god, about 33 meters high. Because it was destroyed by an earthquake in 226 BC in just 56 years, archaeologists could not even determine its exact location and appearance. Construction time: completed in 282 BC. Construction site: Aegean Sea, Rhodes Island, Greece. The colossus of Rhodes is located in the port of Rhodes, Greece, leading to the Mediterranean Sea. Rhode Island in BC is an important commercial center, located at the junction of Aegean Sea and Mediterranean Sea. Port Rhodes was built in 408 BC. Historically, Rhode Island was ruled by many spheres of influence, including Mausolaris (whose tomb is also one of the Seven Wonders) and Alexander the Great. But after the death of Alexander the Great, the whole island was plunged into a long war. Macedonian aggressor Dmitry led 40,000 troops (more than the population of the whole island) to surround the port. After a hard war, Rhode Island defeated the invaders. To celebrate this victory, they decided to build a statue with bronze weapons abandoned by the enemy. This statue has been built for 12 years and is about 33 meters high, which is similar to the height of the Statue of Liberty in New York. The statue is hollow and reinforced with complex stones and iron columns. But this great statue was destroyed by a strong earthquake just over 50 years after it was built. Legend has it that the statue stood in the harbor with its legs apart and boarded the ship only through the middle of its legs, which was very spectacular and interesting. This colossus is actually the Greek sun god and their patron saint Helius. It was designed by architect Charles. After 12 years of construction, the Colossus of Rhode Island was completed in 282 BC. The whole colossus is 33 meters high, made of marble and covered with bronze, and was later used as a lighthouse. However, the earthquake in 226 BC knocked down the colossus, and its fragile knee became the fatal wound of the colossus, and the colossus fell to the shore near the port of Mandraki. In 654 AD, Rhode Island was invaded by Arabs, and the invaders even transported the remains to Syria, which made it more difficult to investigate this spectacle. Like the colossus of Rhodes in Hanging Gardens, archaeologists have so far failed to find the remains of the Hanging Gardens. In fact, many ancient people mentioned the hanging garden in their works, but they just heard it from others and didn't really see it. Is the hanging garden a pure legend? Construction time: about 600 BC, construction site: Babylon, east of the Euphrates River, about 50 miles south of Baghdad, the capital of Iraq. Of course, the hanging gardens in Babylon were not suspended in the air. The origin of this name is purely due to people's misinterpretation of the original meaning of "hang" in Greek "kremastos" and Latin "pensilis". It is generally believed that the Hanging Garden was built by King Nebuchadnezzar (604-562 BC) to comfort the homesick princess Amyitis, imitating her hometown in the mountains. It is said that slaves need to turn a mechanical device to pump a lot of water from the Euphrates River below to irrigate the flowers and plants in the garden. The most amazing thing about the hanging garden is the water supply system. Because there is not much rain in Babylon, and the ruins of the Hanging Gardens are believed to be far away from the Euphrates River, researchers believe that the Hanging Gardens should have many water conveyance facilities. The slaves kept pushing the handle with gears to transport the groundwater to the top storage tank and then return to the ground through the artificial river. Another problem is maintenance, because it is impossible for ordinary buildings to withstand the erosion of rivers for many years without falling down. Because there are not many stones in Mesopotamia, researchers think that the bricks used in hanging gardens are different. They added reeds, asphalt and tiles, and there are even documents that the stone was covered with lead to prevent the river from infiltrating into the foundation. Themis Temple Al themis is the Greek goddess of hunting. Arabs call her Rath, Egyptians call her Isis, and Romans call her Diana. The Temple of themis was highly respected in ancient Greece, so it was built as one of the Seven Wonders. Construction time: about 550 BC. Construction site: in the soul of freedom in ancient Greek cities, about 50 kilometers south of Izmir (Smyrna). Temple buildings are based on marble and covered with wooden roofs. The designers of the whole building are Chersiphron and his son. Its biggest feature is that there are two rows of columns at least 106, and each row is about 12 to 18 meters high. The base of the temple is about 60 times 120 meters. The original temple was destroyed by a fire in 356 BC, and it was built after the original site caught fire again in 262 AD. The Temple of Al themis has been rebuilt seven times. The first temple of Al themis was designed in 550 BC by architects Samos, Cherxihong and his son Mette kinnis, supported by Ionian marble columns. This was the first largest building built entirely of marble at that time. The whole building was decorated with bronze, silver, gold and ivory reliefs of famous artists at that time, such as Pheidias, Polly Cletus, keresey Ras and Vladmont. The statue of Al themis was placed on the central U-shaped altar for people to worship. Later, in 356 BC, the temple was destroyed by fire and invasion. After the transformation, the length of the marble column increased to 2 1.7 meters, and thirteen steps were added around it. Finally, because people who love free souls converted to Christianity, the temple was destroyed by St. John Christom in 40 1 and disappeared from the world forever. Mausoleum of King Mo Solas It is said that the Mausoleum of Mao Solas of Halicarnassus is about 45 meters high, and the upper part of the base is in the shape of a stepped pyramid. The statue of King Solas of the Kingdom of Kalia may stand at the top. This mausoleum was destroyed in an earthquake in the third century. Construction Time: About 353 BC Construction Location: This huge white marble mausoleum is located in the southwest of Turkey today, and was built for Mo Solas and his wife. The whole building was designed by two Greek designers and decorated with strange carving patterns. Fu Yi's achievements are well known. It was destroyed by a great earthquake at the beginning of15th century. Today, there are still some remaining sculptures in the British Museum in London. Mao Solas's Tomb Temple is located in Halicarnassus. Its ground floor is rectangular, with an area of 40m (120ft) by 30m (100ft) and a height of 45m (140ft), in which the pier wall is 20m high, the column is12m high and the pyramid is 7m high. The building is surrounded by pier walls and decorated with stone statues. The statue at the top is four horses pulling an ancient two-wheeled chariot. In addition to its architecture, this mausoleum temple is also famous for its sculptures. The sculpture of Mausoleum Temple was made by four famous sculptors, Briasis, Leo Chales, Scopas and Timothy, each of whom was responsible for one side of the tomb temple. /kloc-At the beginning of the 5th century, Halicarnassus was occupied. In order to build a huge castle, the new ruler used some stones from Mao Solas's tomb temple as building materials in 1494. Today, many sculptures still survive and are kept in museums in London, England. /kloc-since the 0/9th century, the archaeological excavation of Mausolasso's tomb temple has provided a lot of information about Mao. Alexander Lighthouse was built on the order of Alexander the Great (King of Macedonia). The Faroes Lighthouse in Alexandria was built on an artificial island in 300 BC. It is at least 65,438+022 meters high and made of shiny white limestone or marble. Construction time: about 300 BC. Location: fallows Island near Alexandria. Shortly after the death of Alexander the Great, Ptolemy Soter, one of his subordinates, ruled Egypt and made Alexandria its capital. In view of the dangerous sea lanes near Alexandria, Ptolemy Soter ordered the architect soste Lars to cooperate with the Alexandria Library/Mouseon to build the Alexandria Lighthouse, which was completed in 290 BC. When the Alexander Lighthouse was completed, its height deserved to be the tallest building in the world at that time. His designer is Greek architect Sotheby's Chattus. An Arab traveler recorded in his notes: "The lighthouse was built on three steps. At its top, a mirror reflects sunlight during the day and guides the ship with fire at night. " /kloc-for 0/500 years, the Alexandria lighthouse has been guiding sailors to the harbor in the dark. It is also the latest of the six wonders to disappear. /kloc-it was completely destroyed by the earthquake in the 0/4th century. The Fallot Lighthouse is completely different from the other six wonders, because it has no religious color, and it is built purely for people's real life. The light of the Fallot lighthouse shines all over Alexandria at night, protecting the ships at sea. In addition, it was the tallest building in the world at that time. Legend of Alexander Lighthouse: In 332 BC in Alexandria, Alexander the Great of Macedonian Empire established an ancient city-Alexandria, west of the Nile estuary in Egypt. After the death of Alexander the Great, the Ptolemaic dynasty in Egypt began to rise. Alexandra became the capital of Ptolemy dynasty and prospered. In addition, Alexandra is located at the junction of Asia, Africa and Europe, and it can also lead to the ports of the Nile and the Mediterranean. You can imagine how Alexandra prospered and how world trade developed. Moreover, Faross Island in Alexandria has the Faroes lighthouse, one of the seven wonders of the world, which shines on the port. There are also a large number of architectural relics such as temples and Egyptian royal palaces. Although Alexandra is so prosperous, today, Alexandra is beyond recognition. Scientists believe that most of these buildings collapsed due to a major earthquake in the fourth century AD. Scientists have carried out many excavations in Alexandria, including one in 1996. French experts claimed that a large ancient relic was found at the bottom of Alexandria, and traces of ancient roads and paving stones were also found. The investigators found the binaural bottle that sank to the bottom of the sea in ancient times. This is an ancient Greek jar with two handles, which was used to transport wine and other trade goods. The investigation team also found the head of the statue of Pharaoh. The staff first fixed the Pharaoh's head with metal utensils, and then sent the statue into the water with balloons. The survey was conducted at the possible location of the Fallows lighthouse. Just compare the head of the statue with the staff next to it, and you can imagine the huge statue. With these discoveries, many investigations have unearthed thousands of relics, most of which weigh several tons to dozens of tons. From these relics, we can gradually imagine the mysterious lighthouse of Fallows. Due to the prosperity of Alexandra and the backwardness of ancient directional navigation technology, it is conceivable that the Fallows lighthouse, which shines on the whole port, plays an extremely important role in defending the lives of ancient sailors. Whether future generations can have a clearer understanding of Fallows Lighthouse depends on whether the government and experts will pay attention to the excavation of Alexandria. If the excavation of Alexandria can be further developed, more architectural features can be reproduced ... Stonehenge in Britain, also known as Salisbury Stonehenge, Stonehenge, Temple of the Sun, prehistoric stone table, Hiragi Sizhiheng stone pillar, Stoke stone circle and so on. , a famous prehistoric temple site in Europe, is located in Salisbury Plain, Wiltshire, England. It was built from 4000 BC to 2000 BC (March 2008). British archaeologists found that Stonehenge was built 4300 years ago, that is, around 2300 BC) 4 Building structure This huge stone complex is located in an empty Yuan Ye, covering an area of about 1 1 hectare, and is mainly composed of many whole pieces of blue sandstone, each weighing about 50 tons. Stonehenge not only plays an important role in architectural history, but also has great significance in astronomy: its main axis, the ancient road leading to the stone pillars and the rising sun in the summer solstice morning are on the same line; In addition, there are two stones pointing to the direction of sunset from winter to Sunday. Therefore, people speculate that this is probably built by ancient humans to observe the sky, which can be regarded as the earliest prototype of the Observatory. The main body of Stonehenge consists of dozens of huge stone pillars, which are arranged in several complete concentric circles. Stonehenge is surrounded by circular trenches and mounds with a diameter of about 90 meters, and there are 56 circular pits inside. Because these pits were discovered by British archaeologist John Aubrey, they are also called "Aubrey" pits. The first stone that appeared in the local area was a sandstone (also known as "planting stone") weighing about 5 tons in the position of a circular "hole". It took 200 years for this stone to appear, and then several stone pillars were shipped from Wales in the west of England and stood in the center, forming a circle, one big and one small. Archaeologists call it the second stage of Stonehenge. In the latter case, the "planting stones" were removed, and Stonehenge entered the third stage of construction-65,438+080 large sandstone rocks were brought in and rearranged with the original green stone pillars into a circular and horseshoe-shaped structure. In fact, from the existing ruins, people can also see the basic features of the third stage of Stonehenge. It is estimated that at the productivity level at that time, it would take at least 30 million working hours to build Stonehenge, equivalent to 1 10,000 people working 1 year. The most incredible thing about Stonehenge is the boulder in the center of Stonehenge. The tallest of these boulders is 8 meters, with an average weight of nearly 30 tons. However, people were surprised to find that many huge stones weighing 7 tons were placed horizontally on two vertical stone pillars. Salisbury, England is an ancient historical city, which is more than 20 kilometers away from London/Kloc-0. Near this ancient city, there is a small village called Amsberry, where Stonehenge is located. 5 Overview Introduction Many natural phenomena on the earth are still a mystery, and scientists cannot accurately explain this mystery. At the same time, these strange natural phenomena are very attractive, releasing the unique beauty of the earth's nature. Cloud mammatus Cloud | Gravity Wave Cloud | Perforated Cloud | Cirrus Cloud | Podlike Ultracumulus Cloud | Hat Cloud | Wave Cloud | Inclined Cloud | Spray Cloud | Horseshoe Vortex Cloud | Morning Storm | Kelvin-Helmholtz Wave | Perforated Cloud | Rainbow Cigar Rainbow | Fire Rainbow | Moon Rainbow | Double Rainbow | Fog Penumbral Eclipse | Total Solar Eclipse | Partial Solar Eclipse | Moon City Spherical lightning | Reverse lightning | Black Lightning | Branch lightning | Black-eyed galaxy | Gemini galaxy | Vortex galaxy | Large spiral galaxy | Supernova 1987A | Rod spiral galaxy | Hartmann celestial body | M8 1 galaxy | galaxy NGC 3370 | Golden fire and moon | Terra meteor shower | Dragon meteor shower | Taurus meteor shower | Comet hale-bopp | Mercury Transit | Comet Lulin | Star Factory | Four-Star Earth | Golden Fire Combined with Moon | Lyra Meteor Shower | Tail Meteor Shower | Mercury East Distance | Double Star Accompanied Moon | Perseid Meteor Shower | Aquarius Meteor Shower Rain and Snow Ice Circle | Rime | Freezing Rain | Blizzard | Ice Cone Group | Red Rain and Fire Rotating Flame | Aurora | Northern Lights | North Sea Fish Rain | Lightning "Lighthouse" Lightning is not a rare thing unless you have seen Katatombo lightning. In Lake Maracaibo, Venezuela, there are about 150 days every year. This kind of lightning strikes nearly 300 times a day, forming an arc as long as 5 kilometers and a visual distance of 400 kilometers. It is said that local passing ships have long regarded this lightning as a beacon for navigation. Catatumbo lightning lasts for a long time because the clouds floating from the Andes are "rich" in storms and lightning, and biogas produced by a large amount of organic matter in the swamp area of Lake Maracaibo is also a catalyst for lightning formation. In July, 200 1 year, it suddenly rained "red rain" in Kerala, western India, and it rained intermittently for two months, so that there were "rivers of blood" everywhere, and the scene was very frightening. Researchers all over the world have heard of "rain" and put forward various speculations. Among them, an Indian scientist came to the most unexpected conclusion after five years' research: "Red rain" is actually not rain, but a substance with cell membrane but no nucleus, similar to bacteria. These substances can also reproduce at the high temperature of 365,438+05℃, which may come from aliens. Before "Red Rain" landed, there was a strong sonic boom in Kerala. Scientists speculate that when a comet passed the earth that day, some fragments containing rich organic chemicals passed through the atmosphere and fell on the earth with the rain, which should be the origin of "red rain". If you see two moons in the sky, congratulations. This astronomical phenomenon called "Izuri vase" by French writer jules verne is very rare. Because it is somewhat similar to the formation principle of a mirage, it is also called a "mirage on the moon". A "mirage" is more likely to appear at sea. After the sunshine is sufficient, the seawater temperature will gradually increase in the afternoon, and an abnormal air layer with relatively high temperature will appear on the sea surface. When the temperature difference between different air layers reaches a certain level, when the moonlight passes through the hot and cold air layers, the path will be deformed and refracted, thus forming the illusion of the second moon. However, this spectacle often lasts only a few minutes. Then, when the two moons are separated, the shadow of the moon will not enter the sea. "The Burning Rainbow" If seeing the burning clouds will make you deeply intoxicated, then "The Burning Rainbow" will definitely make you speechless: the rainbow is no longer a quiet bridge in the traditional impression, but burns in the air like a raging flame and flies in the air like the wings of a phoenix. The "burning rainbow" is also called "horizontal arc around the earth", and it is also called "solar orientation" or "solar orientation", because the appearance of this scene is related to the sun and is produced by the refraction of sunlight in the ice crystals in the upper atmosphere. However, only when the sun is at an angle of 58 degrees to the horizon and cirrus clouds exist at an altitude of 6 100 meters, will this spectacle appear in front of your eyes. [1]6 There are some "immortal" drought-tolerant plants that can grow well without eating human fireworks for a long time. We are familiar with cactus, camel thorn, Populus euphratica and so on. In fact, many of these plants are "immortal" because of long-term "cultivation". "Air grass" is like a wig, like a beard, hanging high in mid-air, without soil and water nourishment, and even without roots. This is the magical plant Luo Song pineapple. It absorbs moisture and nutrients in the air through the scales on the leaves, so it is also called "air grass". It was here that the first step of China ancient people's fantasy of cultivating immortals was realized. Its roots have degenerated into lignocellulose, and its growth will not be affected if it is completely exposed. There are about 550 species of "aerial grass" known in the world, and it was only in recent years that China introduced them. The small "aerial grass" is only two or three centimeters high, and the big one is as high as four or five meters. The rainy season is lush, and the leaves wither and fall into a dead state in the dry season; Roots can be as thick as half a meter and extend more than 40 meters away, which not only absorbs groundwater, but also absorbs moisture in the air-these are the secrets that baobabs can protect themselves and moisten others in the long dry season. In southern Sudan, where it doesn't rain all the year round, more than 30,000 baobabs are local living reservoirs, and people depend on them for their livelihood from generation to generation. The bark, leaves, roots, trunks and seeds of baobab trees can be used, which can be described as treasures. In addition, the baobab tree that can hold a boat in its belly can be used not only as a natural reservoir, but also as a house. In the literary masterpiece The Little Prince, this tree was once compared to a "castle". The water content of "Back to Life Nine" is less than 5%, and it is still alive and kicking after being exposed to water for several years. What other plant is more worthy of the name of "coming back to life" than Selaginella? The "immortal bird" in this plant withers and dries up in the dry season, and once it is nourished by water, it is easy to "resurrect". They grow in sunny hillsides and crevices in rocks. Because there is no water to store, they have to rely on "death" to continue their hard life. The "nine dead resurrection grass" in South America is even more amazing. It can not only "come back from the dead" but also "run away from home". In the dry season, they break free from the ground, become a ball, migrate with the wind, and return to their original shape to take root and sprout when they meet the water source. As the only plant in the world that knows how to water itself, desert rhubarb attracts you, first of all, because of its large leaves, which is in sharp contrast with other desert plants. This kind of leaf has a strange structure and a smooth appearance like wax. It can play the role of "water absorption method", introduce water into the roots through complex "internal channels" and infiltrate into the underground 10 cm to realize self-watering. Although unfortunately born in the desert, rhubarb in the desert can accumulate 16 times as much water as other desert plants, which is comparable to plants growing in the Mediterranean climate. It seems that the desert rhubarb who leisurely drinks alone in the desert is really a rich man in the slum.