Qiu Qiu, they meet in episode 4 of KO One Re-act, when her purse had been stolen up against a group of men he appears and saves her. They both care about making money, so work together in the libray. Qui Qui had a crush on Zhong Wan Jun, when she confessed her feelings and was then rejected, Gu Zhan spended more time with her and make her forget about being rejected.