此一时，彼一时

Explanation: This: this; He: That. Different times, the situation has changed, can not be compared 　　Usage: Complex sentence; as subject, clause; that the situation has changed 　　Source: Qin Meng Ke, "Mencius Gongsun Chou under the": "was then, this is now. There must be the King Hing five centuries, during which there must be those who were the world." 　　Examples: ~. He is now in heaven, I have to clean up Ha, from death gully, it was lucky, and dare raved what. (Ming Ling Meng-chu, "half an hour of surprises," Volume II 12) 　　Riddle: The two sides have six very different Thesaurus:  that was one situation, that was one situation