1. In Detective Di Renjie, Liao Wenqing starred in the third Underworld. He is the deputy commander of the military philosopher in Wuwei, Zuo Long, and a real member of the underworld; Mainly tell the route of the underworld army, be the insider of the underworld, and help the underworld to seize the salary.

2. The third part of Detective Di Renjie mainly tells the story of cooperation between Di Renjie and Li Yuanfang in solving many complicated and bizarre cases. The play is divided into two parts, namely the underworld and the Phantom of the Caoqu, one in Liangzhou and the other in Yangzhou, but in either case, the truth behind it is embarrassing.