Who's Song Kun?
Li Yao is the real Song Kun. He pretended to be Li Yao, of course, just to hide his identity.

As a policeman, Li Yao is well aware of the location of Song Kun gangs and the relationship between the people inside. It turns out that Li Yao used to be a policeman. He has been investigating Song Kun and vowed to arrest him.

Later, he resigned, but returned to the police station as a consultant. Obviously, his identity has changed. Judging from the change of identity, Li Yao is no longer the original Li Yao, but the changed Li Yao by Song Kun. And the reason why he returned to the police station on the grounds of investigating Song Kun was nothing more than to be able to use the convenience of Li Yao's identity to get the information he wanted.

Extended data:

Huan Yan is an urban suspense online drama directed by Sha Hailong and starring Zhou Yiwei, Cao and Keanu. The play tells a series of shocking plots behind a small person's sudden face change. The play was broadcast on Tencent Video 165438 on June 24th, 2020.

Introduction:

Lao Pan, a plastic surgeon with a broken reputation, lived a repetitive and boring life every day until an incredible conspiracy came. In a coma, Lao Pan woke up in a dilapidated abandoned factory building and hobbled home, only to find that someone had replaced his identity with the same face. Lao Pan's world has been completely subverted, and the situation is sinister, and his wife and children are obsessed with it. Whether he can overcome many difficulties and peel away the truth layer by layer.

References:

Baidu Encyclopedia-Glowing Face