C76 Big Things Small Things Nothing
I think he's been with Lu Yunchen for a long time. Moreover, she heard Lu Yunchen analyze Pei Yao and Qiao Shaoyun's case and heard some habits.
Therefore, Gu Zhenzhen suddenly heard Qin Xiaoyan's question and two thoughts emerged in her heart. First, Qin Xiaoyan knew who Pei Yao was dating. Secondly, the person Qin Xiaoyan knew was very likely different from the person Gu Zhenzhen knew