appear and disappear without regularity
Chinese idioms, Pinyin is ch ū m ò w ú ch á ng, meaning to appear and disappear, not certain, people can't understand. It comes from on Guanghai's two bandits.
The origin of Idioms
In Wang Shipeng's on Guanghai's two pirates of Song Dynasty, it is said that "the pirates are always on the verge of Haizhou county."
Idiom usage
Subject predicate type; used as predicate and attribute; with commendatory meaning, used for mysterious people or things. Another mile parallel to the northwest, overlooking the west of the mountain range, it falls down, but is not visible; the east of the mountain range is facing up, but ~. Xu HongZu's travels to Yunnan diary of Xu Xiake in Ming Dynasty
appear and disappear without regularity
find spiritual sustenance in sth. - tuō wù yù xīng
strike an attitude of half-declining and half-accepting so as to provoke the other party to greater or more ardent efforts or to a more agreeable offer - bàn tuī bàn jiù
regard it as a dangerous road to take - shì wéi wèi tú