According to Weibo's query, the reason why Bailu is called Huazi is because Bailu's nickname is Xia Fenghua, the role played in "Going North", so fans also call the role played by Bailu Xia Fenghua Huazi.
Xia Fenghua is a character in the TV series "Going North", played by White Deer. "Go North" is directed by Yao Xiaofeng, Bailuyuan, Ling Tu and Shuanchongchu; Europe, Europe, Hu Jun, Qi Huan; Yang Yue, Liu Min and Zhaizi Road; Wang Xueyin, Li Naiwen, Tong Lei, Gao Zhiting; Salina, Vanda Lee; A TV series starring Liu and Liu Hengfu. The play is based on Xu's novel of the same name.