Feng is also the reason why he appeared in Hatoyama Ranch. Furuya Rei is an undercover, and most of the time he lives as an ambulance man. Feng is also in charge of contact, and there are still many civil servants to do.

On the way to investigate the case that day, Feng was accidentally arrested by the suspect and locked up with a male corpse. Feng Jianyu's mobile phone was taken away by the prisoner. He found a mobile phone on the body and contacted Furuya Rei directly.