This book includes 25 detective documentary works published by the author. "The Secret Trick to Catching Thieves in Dongting" trace technology is the unique skill of the young deputy director of criminal investigation Yu Liyou. All criminal suspects cannot escape his tracking. "Director in an Emergency" Whenever there is a critical moment, the Director of Public Security Zeng Qingjia always steps forward and uses his actions to bring out a steel-like team, and all criminal cases are solved.
