In seismology, he invented the "Seismograph" (AD 132), which was the first instrument in the world to measure earthquakes and directions, more than 700 years earlier than Europe. In astronomy, he invented the "armillary sphere" (A.D. 1 17), ranking first in the world. In literature, he is a brilliant star in the history of China literature. The masterpiece "Tokyo Fu" and "Xijing Fu" are combined into "Erjing Fu", which describes the prosperous scenes of Chang 'an and Luoyang in the Eastern Han Dynasty and satirizes the dissolute and shameless parasitic life of bureaucrats and nobles. Du Nan Fu vividly depicts the social outlook, people's life and folk customs of Nanyang at that time. In addition, he has written more than 30 articles, such as Ding Qingfu, Simultaneous Songs, Si, Gui Tiancai and Four Sorrow Poems. In terms of geography, he drew a complete topographic map and developed a "drum cart in the mind" and a "compass". In mathematics, he wrote The Theory of Calculation, and calculated the values of pi between 3. 1466 and 3. 1622. Although this is slightly different from the known pi today, it is amazing that people can have such an accurate calculation more than 800 years ago. His achievements predate those of Europe 1300 years. In meteorology, he created the "Hou Fengyi", which is an instrument to predict the wind and direction, more than 1000 years earlier than the anemone in the west; In mechanics, he made the world's earliest aircraft "single-wood flying eagle", and also made "map gauge" (sun shadow device) and "activity calendar". In art, he ranks first among the six famous painters in the Eastern Han Dynasty.
Zhang Heng's outstanding contributions in science and technology, literature and art are not only the glory and pride of the Chinese nation, but also the precious wealth left to the whole human history. Zhang Heng deserves to be a dazzling science and literature twin in the world. 1956 10, inscription by Guo Moruo, president of China Academy of Sciences: "Such an all-round development figure is also rare in world history."
In 1950s, Zhang Heng was listed as one of the top ten cultural celebrities in the world, and he was also called Copernicus, Darwin, Newton and Galileo. 1953 and 1955, China successively issued the portrait of Zhang Heng and the seismograph stamp; 1960, Princeton university translated and published his "two capitals fu". 1970 The 7th session of the International Astronomical Union (the Moon Committee) named a crater on the moon as "Zhanghengshan"; 1977 The 20th Committee of the International Astronomical Union entrusted the International Asteroid Center to name an asteroid numbered 1802 in the solar system as "Zhang Hengxing"; 198 1 year, a 16000-ton multi-purpose freighter built by Shanghai Shipyard for China Wave Company was named "Zhang Heng"; 1986 the international mineralogy Committee and the international nomenclature Committee named associate professor Wang kuiren, deputy director of the earth and space department of China university of science and technology. In the study of meteorites in Boxian County, Anhui Province, a new mineral that has not been discovered on the earth is "Zhangheng Mine". In 2003, in order to commemorate Zhang Heng's hometown Nanyang, the Asteroid Naming Center of the 20th Professional Committee of the International Astronomical Union named this international asteroid with a permanent number of 9092 as "Nanyang Star". Zhang Heng's name is in space, living in harmony with heaven and earth, and shining with the sun and the moon. The great ship "Zhang Heng" sailed the world with the pride and glory of the Chinese nation. Zhang Heng shines in history with brilliant achievements and leaves them to future generations with fruitful results. To benefit mankind and win glory for China is not only a great contribution to China, but also a far-reaching influence on the world. His achievements are worth remembering, and his spirit is worth learning.