Introduction to episode 8
Old Mengla rang a grenade and died with the spy. Xu Zhongyi and the little girl were deeply grieved. Gu Yufei secretly installed a bug in Xu Zhongyi's office at the request of Mr. Qi.
A coincidence made Xu Zhongyi realize that he may have been monitored. Mr. Qi locked the scope of the girl's normal school, and learned that Xu Zhongyi had been to the school at the corresponding time.
Li Weigong had the idea of making Xu Zhongyi and Gu Yufei live together upstairs and downstairs.