C397 There Was a Long Time ago of Collusion

However, it could also be seen that Xu Jian should know a lot about Su Yu. He even knew that Su Yu's disappearance was related to him?!

However, this kind of thing should not have been thought of by Su Xiaoyou at the first moment, unless... Xu Jian already knew some insider information.

For example, Xu Jian knew that Su Yu drugged Lih Xiunian and went to find Lih Xiunian. Then