The hero who invented nesting in ancient China mythology. Also known as "big nest". At the beginning, people lived in wild caves and were invaded by wild animals. The Chao family built wooden nests to avoid wild animals. Since then, people have lived in caves and built nests. Zhuangzi stole the foot and said, "In ancient times, there were many beasts but few, so people lived in nests to avoid them. It is said that there are people of Chao's family. " "Taiping Yulan" volume 78 quoted "Beginners of Xiang Jun": "There is a nest of saints in the ancient cave, which is famous for its great dynasty." Zhang Hua's Natural History in Jin Dynasty. Essay: "In the past, there was a Chao family, and it was expensive to have a minister, which was taken by the country. I am angry and change, and I have a nest of death. "

The legend of Youchao family has been recorded in ancient books in pre-Qin period. Zhuang Zhou said: "In ancient times, there were many animals, so people lived in nests to escape. They pick chestnuts during the day and live in trees at dusk, so they are called the people of the nest family. " Han Fei said: "In ancient times, there were fewer people and more animals, and the people were invincible to animals, insects and snakes. There are saints who make it a nest to avoid group harm, and the people are pleased with it, making it the king of the world. posthumous title' has a nest family'. " (Han Feizi. It is said that the Youchao family invented nesting in ancient times. This legend reflects China's entry from cave to nest in primitive times. "Dunjia Mountain Map" said: "Shilou Mountain is in Langya, and the Chao family once ruled this Shan Zhinan." ("Literature and Art Collection" Volume 11 cited) Langya Mountain is located in Zhucheng City, Shandong Province, where the Chao family is not credible. Xiang Jun's "Compilation of Beginners" said: "In ancient times, there were saints who went out of their nests to teach. There are nests in the south, holes in the north and ancient relics. " ("Taiping Magnolia" volume 78 cited) that nesting began in the south. "Lin Yiji" also said: "When Cangwu goes to the south, there are literary savages, who live without houses, live in trees, eat raw meat, collect incense as a business, and trade with people. If they are the people of the court." ("Taiping YuLan" volume 172 cited) Zhou Qufei said; "Deep and wide people live in the gate, build a hut and herd cattle. The reason for this is that there are many tigers and wolves in this land. It is better to say that people and animals are unsafe, but the meaning of ancient nesting! " All these indicate that nesting may have originated in the south.