Liu Chang lives in an old community. After ringing the doorbell for a long time, a drunken man with a shaggy beard came to open the door. Cheng Jin showed his police ID card, the man sneered and let them in: “What do you want again? You said I was a drug addict, and now my wife wants to divorce me, are you happy?”

Cheng Jin and Wu Jian walked into the room, there was a strong smell of alcohol, the room was in a mess clearly looking like it has long since been cleaned up, Wu Jian asked him: “You said you stopped taking drugs, so mind explaining to us what is going on?”

“How the fuck should I know what’s going on, I’ve been clean for years, I’m definitely not going to do that shit again!” Liu Chang cursed.

Cheng Jin looked at him, “Have you ever been to a bar called Xie Du?”

“I haven’t been to a bar since I got married, I just go to work every day, get off work, and then go home back, how can I have time to do drugs!”

“Did you eat or drink anything in the hours before you took the drugs?” 

“No.” Liu Chang frowned, “I had a cold that day, my appetite was not good so I didn’t eat anything.”

“Didn’t eat anything?” Cheng Jin asked him to make sure.

“I drank water in the office and everyone in the office drank water from there.” Liu Chang thought for a moment, “I also ate cold medicine.” After saying this he went into the room to take the leftover cold medicine. Later that day after being hit by a car, he stayed in the hospital for a few days so he didn’t eat these cold medicines again. The hospital that prescribed him the cold medicine and the hospital he stayed in after he was hit by the car were both the Huiren Hospital. 

Cheng Jin saw that the middle opening part of the cold medicine was used which he found a little strange because generally most of the people start taking medicine from the side opening part, “this medicine was completely sealed, right?”

Footnotes:

1. Lao Tzu: old man or old master or father. People use this word mostly to refer themselves as older or superior, kinda in an arrogance way. You might have read or watched many CN series where people use this word. Also popularly known as “laozi”(老子)

2. Qingshui: Qingshui District, also spelled as Chingshui District, is a coastal suburban district in western Taichung City, Taiwan.