C96 A Kiss on the Forehead in the Middle of the Night

Leng Yichen opened the drawer, took out a key from inside and locked the door of the study.

Ann Xiaojing, who was hiding behind the door, noticed his actions and frowned slightly.

Why lock the study? Was it really because of that book? But he didn't see anything!

Leng Yichen's action made her more and more confused