2. The Heluotu, also known as the Heluotu Classic, is a famous legend about the ancient civilization of China. Six or seven thousand years ago, the dragon horse jumped out of the Yellow River and had a river map; The tortoise came out of the puddle with a letter on his back. Fuxi drew eight diagrams according to the book of He Tuluo. After that, Dayu managed the flood, Hebo presented the river map and Fu Fei presented Luo Shu, so that Dayu finally defeated the flood. As for China's astronomical achievements in ancient times and the highly mathematical achievements seen by modern people from the Book of Hutuluo, that is the subject of experts' research. We know that the ancient gods in China are representatives of culture, so the images of Fuxi and Nu Wa often hold rules and regulations in their hands. The River Turow held by Hebo Fu Fei also represents their lofty position in ancient times!

3. Tai Chi map is said to have been handed down by Chen Tuan, a Taoist priest in Song Dynasty. It was originally called "endless map". Chen Tuan was a Taoist from the Five Dynasties to the early Song Dynasty. According to legend, he has profound attainments in Inner alchemy and Yi-ology. According to historical records, Chen Tuan once passed the Taisheng Map, Taiji Map, River Map and Luoshu to his students for planting, and passed them to Mu Xiu and others respectively. Later, Mu Xiu passed Taiji Map to Zhou Dunyi. Zhou Dunyi wrote Taiji Illustration to explain it. The Tai Chi map we are seeing now is the biography of Zhou Dunyi. Taiji diagram is a circular pattern composed of black and white fish patterns, commonly known as yin and yang fish. Taiji is an ancient philosophical term in China, which means to deduce the origin of everything. Taiji diagram vividly expresses its philosophical thought that yin and yang rotate and opposition is the root of everything.

Taiji figures show a kind of mutual transformation and relatively unified formal beauty. Later, it developed into a national pattern with a unique "beautiful" structure in China. Such as "Greeting", "Harmony between husband and wife" and "Dragon and Phoenix are auspicious", all of which are vivid and beautiful auspicious patterns, which are deeply loved by the people.