Brother Cry For Me(1991)

Li Zhenqiu loves Lin Xinxin, but she mistakes his qualities for those of his brother, Li Junjie. Junjie dumps Xinxin for a rich girl. Zhenqiu learns he's not his parents' biological son and becomes desperate for wealth. He reconnects with his rich father, Zhang Jun, seeks his approval, and kidnaps a key witness to protect him. Xinxin realizes her love for Zhenqiu, but he has changed. When she leaves, Zhenqiu feels everything is meaningless.