乐极悲生

Explanation: Extreme happy when sad things happen people. 　　Source: "Records of the Historian funny Biography": "Wine is very chaotic, music is very sad, everything really, words can not be a very, very much the bad." Huainanzi Road should be training ":" Cardiff matter Decline, music is very sad . " 　　Examples: Can be precisely ~, today one has to Taylor. (Yuan Palace Dayong "Fan Zhang chicken millet" fourth fold)