三更半夜

Explanation: Into the night just before dawn, three-shift is midnight. That night. 　　Usage: Joint type; as object, attribute; that night 　　Source: "Song Zhao Chang explain in words": "Four persons (as Yu Chen, Dan Hu, Dong Yan, Liang Hao) Rixi will Changyan first. Capital worth proverb says: 'Mr Midnight, Dong middle of the night'." 　　Examples: He used to work until ~. Thesaurus:  at dead of night, in the dead of night, night midnight, Loujin More Lanna, Reference back to the turning