走火入魔

走火入魔

Literally means:

be addicted and become eccentric

Actually means:

In Chinese marshal novels, this phrase means that one takes a wrong method in Kong Fu practice, resulting in physical or mental damages to oneself (such as blood vomiting, paralysis or lunacy).

Today, it figuratively refers to a person who is so crazy about someone or addicted to something that he/she begins to show signs of morbidity. It can also figuratively mean one's absurdity is hard to under stand. Derogatory.

武侠小说中指练功方法错误，对身心健康造成损害（如吐血、瘫痪、精神失常等）。

现比喻极度迷恋某人或某事，甚至因而出现某种病态。也比喻行为怪异，令人无法理解。具有贬义色彩。