Chang'er Flies to the Moon

Yi got some elixir from the Queen of the West, but his wife Chang'er stole it and flew away with it to the moon. Thereafter she lived on the moon in the form of a toad, and was called the Moon Spirit.

from Huai nan zi (Writings of Prince Huainan)

 

 
 
People of ancient times said that there was a bay tree and a toad on the moon. Some strange books even said that the bay tree was five thousand feet tall, and that under it there was a man chopping at it all the time. However, the tree healed itself immediately after each cut. This man, who cam from Xihe, bore the name of Wu Gang. He had done something wrong while learning to become an immortal, and as a punishment was made a life-long tree chopped on the moon.

 

from You yang za zu (Notes from YouyangMountain)