According to tv cat's inquiry, Gao 'an is the role of forensic pioneer 4. Gao An found his girlfriend cheating in episode 19. In the plot, when Gao An and Hou were dealing with the bizarre death of a private car on the hillside, they accidentally met someone who should have been in the field, but she walked with another man and had a close attitude. Later, Xu planned to ask Gao An about the situation, and Gao An was puzzled. In the 20th episode, Li Min voluntarily confessed to Gao 'an, and they broke up.

Forensic Pioneer IV is a forensic drama produced by Hong Kong Television Broadcasting Co., Ltd., produced by Mei Xiaoqing and starring Raymond, Rebecca, Tang, etc.