In ancient China, people believed that there were ten suns that appeared in turn in the sky during the Chinese ten-day week. Each day the ten suns would travel with their mother, the goddess Xi He, to the Valley of the Light in the East. There, Xi He would wash her children in the lake and put them in the branches of an enormous mulberry tree called fu-sang. From the tree, only one sun would move off into the sky for a journey of one day, to reach the mount Yen-Tzu in the Far West.

Tired of this routine, the ten suns decided to appear all together. The combined heat made the life on the Earth unbearable. To prevent the destruction of the Earth, the emperor Yao asked Di Jun, the father of the ten suns, to persuade his children to appear one at a time.

They would not listen to him, so Di Jun sent the archer, Yi, armed with a magic bow and ten arrows to frighten the disobedient suns. However, Yi shot nine suns, only the Sun that we see today remained in the sky. Di Jun was so angry for the death of nine of his children that he condemned Yi to live as an ordinary mortal in the earth.