Be honest and spy
The Chinese idiom, Pinyin is m í ngli á n à NCH á, which means to investigate and study by various methods. It's from the west chamber, zhugongdiao.
The origin of Idioms
Jin Dong Jieyuan's "Xixiangji zhugongdiao" Volume 8: "we are not afraid of being honest and secret, we believe in the spring and Autumn Annals, we do not want Yingchuan huangba."
Analysis of Idioms
Close synonym: an interview in the Ming Dynasty and an investigation in the dark
Idiom usage
As predicate, object, attribute; used in investigation
Be honest and spy