C207 Did Dr. Tang have an obsession with cleanliness?

After getting onto the elevator, they quickly stopped in front of a door.

Dr. Tang pointed to his own pocket and said to Wen Xin: "The key is inside. I'll have to trouble you to help me take it out." Wen Xin looked at Dr. Tang, reached into his pocket and took out a bunch of keys.

"My hands are empty right now. Could you open the door for me?"

Wen Xin followed suit, Mu Tang laid on the Dr