He Yan's name appeared on the registration form. The date was a day after the incident had occurred.
In the third column of the registration, there was the ID number of the person who inquired.
According to the birth date on the ID number, Jian Yiling could confirm that it was indeed He Yan and not someone else with the same name.
The last column of the registration was a reason for watching the surveillance:
[Earrings lost. Suspect that a thief got into my room.]
Yu Xi continued to speak, "The second book records everyone who has checked in at the hotel this year. I looked into it and it seems as though He Yan hasn't stayed in this hotel this year at all."
As Yu Xi spoke about these things, he examined Jian Yiling's expression.
He was unsure of whether he explained everything in enough detail. He wondered if Jian Yiling could understand what he was saying.