C88 Teach You
Gao Fei previously treated Yan Hong as a friend that didn't need to spend money. Since they were all friends, he couldn't just ask her to spend money.
However, after hearing Su Beishan's words, his attitude changed drastically and he treated Yan Hong as his woman.
Spending his own woman's money was perfectly justified. Brother Fei didn't care about others saying that he was a pushover: Hmph