Wu Kang was not good at staying on task. He would start many jobs, but change his mind, and start doing something else. He had many different jobs, but never finished any.
One day he decided that he wanted to live forever. So he went to the mountains to look for someone to teach him.
The teacher showed him about medicines to could heal people.
The teacher showed him how to play chess.
The teacher showed him the books about how to live forever...
The teacher was very angry with Wu Kang, and took him to the moon. The teacher told him "You can not come back to earth until you cut down this tree!"
So Wu Kang took his axe and started chopping...
But this was a special tree that every time it was cut, it could fix itself immediately.
Wu Kang is still on the moon trying to finish cutting down that tree.