The two walked inside.
"Officers, please take a seat!"
Li Jian sat on the sofa, took out his notebook, and asked, "Do you know the resident upstairs?"
The man shook his head, "No, I don't."
"Were you living here last October?"
"Officer, I was on a business trip abroad for projects in the second half of last year."
Li Jian looked around, "Is there anyone else in your household?"
"I'm a bachelor, living alone."
Not being at home during the time of the crime, there was no need to continue asking. Li Jian closed his notebook and said, "Thank you. Sorry for disturbing you so late."
"It's fine! Cooperation between police and citizens is essential."
"Did something happen upstairs?"
Li Jian replied solemnly, "Sorry, we have confidentiality regulations."
The man smiled, "Understood, I asked too much."
Then, Li Jian and Wan stood up and left.
As they reached the hallway, Li Jian glanced again at the room under renovation.
