There is a city and a turtle. The turtle is under the city and the city is on the back of the turtle. If the turtle moves, the world will be turned upside down. If the turtle is safe, the vegetation will change forever. Every four days, a Taoist named Gu jumped into the deep well. They persisted for four hundred years, until the last crazy Taoist Gu, who had no family and no heirs, was unwilling to jump into the deep well again. He constantly lures greedy people into the deep well, telling them that there is endless treasure in the deep well. College student Zhang Jiayuan returned home, and then he wanted to uncover the secrets of Turtle City.
