The investor died in the ward and tetrodotoxin was detected in his stomach. Interpol Liu Shang investigated the case and found out that Chu Nian, a doctor from Qingmei, was the killer. The murderer also gave Chu Nian an "extra meal". One holds a scalpel, the other holds handcuffs, and the two are involved in a laboratory drug case. Liu Shang knocked on Chu Nian's consulting room door with a lollipop in his mouth: "This case has something to do with you. Don't stay alone recently."
Intention: Trust is the only light in the dark night. Some people use it as a knife, and some people use it as a road.