Deep in the dark
It means honest and honest in heart.
Idioms and allusions
[source]: "on biographies of Han Changru in historical records": "Yu and Husui's law calendar, from the perspective of Han Changru's meaning, Husui's deep and profound. The words of the world are true to the elder Liang [example]: Gai Gong's ~, can be proved. Song Ye Shi's inscription on Cai cemetery
Discrimination of words
Usage as predicate, attribute and object; used to be a person.
Chinese PinYin : shēn zhōng yǐn hòu
Deep in the dark
difficult to guess or comprehend. xuán miào mò cè
the soft intestines turn a hundred times. róu cháng bǎi zhuǎn