C949 Acute Perceptive Memory
Cai Zhenghong probably noticed it right after she got the cup and contacted his informants in the police station to help him take the cup!
Then, was she really Cai Zhenghong's daughter?
If so, why did he take the glass away? Wouldn't it be better to let her test it out?
But if it wasn't, then it was more likely that he took it!
However, Cai Zhenghong was usually very secretive