One day, a hungry wolf (狼) is looking for food in the countryside. Luckily (幸运地), he finds a sheepskin (羊皮) on the road. 

He thinks, "If I wear this sheepskin and stay with the sheep, the man won't know I am a wolf. At night, I can get a young sheep and enjoy a delicious meal. Night after night, I'll have many delicious dinners. "

Thinking of these ideas, the wolf can't help chuckling (咯咯笑). He puts on the sheepskin, and looks up and down-nothing is wrong but he looks a little fat. "It is not a big problem, "he thinks. He quickly runs into a group of sheep when the man is busy looking at the other sheep. In the evening, the man puts the wolf with the sheep in the same house.

In the house, the wolf waits anxiously (焦急地) for the night to eat the sheep. But on that day, the man wants to make a big family dinner. He goes to the house to look for a fat sheep. 

The wolf becomes a big meal on the man's table. All fools (傻瓜) are always fooling themselves at last.