The Dragon Painter

 "Do you like the dragons, my load ?" he asked.

"I do," the Emperor replied. There's just one problem. You haven't finished the eyes !"

It is the story which has long histry in China. Chang is a painter that everyone loved. He paints all kind of things but especially animal is the best. One day, the emperor of China  heard about him. Then he asked to Chang to paint the dragon because he needed someone to paint his new temple pictures. Chang draw 4 dragons to wall, but any dragon have no eyes. Why he didn't draw eyes?