Evil in disguise
It is a Chinese idiom. Pinyin is R ě n è C á ngji ā n, which means to commit evil for a long time with evil intention. It comes from shizongji, a draft of Qing history.
The origin of Idioms
In shizongji, a draft of the history of the Qing Dynasty: "bingshen, who had no evil and hidden evil, ordered Fu Erdan to be the general of Jingbian The war on Junggar. "
Idiom usage
Used as a predicate or attributive; used in writing
Evil in disguise
till the seas dry up and the rocks decay - hǎi hé shí làn
No heaven above, no earth below - wú tiān yú shàng,wú dì yú xià
deal with a host of problems every day - rì yǒu wàn jī
feign madness and act like an idiot - zhuāng lóng mài shǎ