In this process, they just needed to pay attention to the suspect's subtle facial expressions, thoughts, and especially when hearing certain names or places.
These details were sometimes more important than the testimonies.
"Li Yabing, where were you at 11 p.m. on the night of September 3rd?"
"At the infinity pool on the top floor of the Yimei Hotel."
"Was it just you and the victim at the pool, and did you have a conversation with the victim?"
"I didn't even notice her," Li Yabing said, "When I arrived, I did see her taking pictures at the pool, but after I swam for a bit, she was gone. I just assumed she had gone back—officer, I've answered these questions many times already."
"You really didn't have any contact with the victim?"
"Really, none."
"So was there a third person at the pool at that time?"
"I can't be certain of that," Li Yabing replied, "The lights were dim, and I was focused on swimming. Maybe there was someone, maybe not."
After the interrogation ended.
