乐极生悲

Explanation: Extreme happy when sad things happen people. 　　Usage: Contraction type; as predicate, object, attribute; refers to the extreme to place people happy sad 　　Source: Han Liu, "Huai Road should be training": "Cardiff matter Decline, music is very sad." 　　Examples: ~ Who knows, once they violated the court enjoyable until the door survey, an unknown fate. (Ming Feng Meng "Jingshitongyan" Volume XVII) 　　Results: New wife cry 　　Postscript: New wife cry 　　Riddle: Laughable person; Jiangzhou Sima wet Pathetic Thesaurus:  Thailand which has a very, Taijishengfou Antonym Group:  North old man in disguise, After rain comes fair weather ., Because of the calamity for the blessing, a fault on the right side, Misfortune may be an actual blessing., What one loses on the swings one gains on the roundabouts.