Ou Xiaodi liked Yan Ge very much, very much, although at first he only regarded him as a benefactor.
She first brought food to Yan Ge in her mother's name, and then by some strange combination of circumstances, she recognized Yan Ge as her brother in front of Ou's mother.
Yan Ge did accept her, but later Ou Xiaodi could not accept Yan Ge.
What you can't get is always the best. In her case, she needs someone with money to rely on.
But Yan Ge will never be able to rely on him because he has no ambition at all.