Li Dongxu knows which episode is the real background of Jiang Yishan.

Li Dongxu and Jiang Yishan broke up in 16. Li Dongxu said that Jiang Yishan had cheated him. In fact, Li Dongxu sacrificed her love for the happiness of her sister Li Xiaxi. In order to make Jiang Yishan give up, Li Dongxu married Sun Jiayuan. Later, in the process of getting along with Sun Jiayuan, Li Dongxu had feelings for Sun Jiayuan, because this marriage was not sincere and was opposed by Sun Jiayuan's parents. Sun Jiayuan has paid a lot for love.