The Farmer and the Stork 农夫和鹤
A farmer casts a net in the planting field. Besides a stork, some birds who come to the field for food are caught by the net. The stork's leg is broken by the net. He implored the farmer: please spare my life! I am not a crane but a stork. I am a bird with a good temperment. Look at me, Iam so faithful. I work hard for my parents, you may look at my feathers which are different from the cranes. Tha farmer laughs and says: ah ah ah, maybe, what you say is right; but I know, since you were caught with these cranes who stole my seeds, you should die with the cranes.
This is to say, we should not make friends with bad man.