In the TV series, whether the yacht failed to be arrested or Xu Jiang provided Gao Qiqiang with the exact time and route for An Xin to escort Chen Shuting back to Jinghai, all these are enough to prove that there is a mole inside the police.

An Changlin and Meng Haidu are just "scapegoats", and the real mole is Zhao Lidong. Although the role of Zhao Lidong does not appear very frequently at present, there are many questions about him. In The Knockout's follow-up play, there was a scene in which Xu Jiangyan invited a police spy. Although the camera can't give the man's face, you can see his back and hairstyle.