Qing Dynasty public case novels. The protagonist Mao Dengke (fictional character) is an upright and honest official who can solve cases like a god. The novel mainly describes how he solves a series of complex cases through meticulous investigation and reasoning, such as rape and murder, murder for money, frame-up, etc., And finally delivers justice to the victims and punishes the real culprits, which reflects the people's yearning for honest officials and fair justice.