looking for sister

Both the Su family and the Lin family are aristocratic families, and they have reached a friendly marriage relationship since Su Mu's grandfather's generation.Su Mu is the eldest son and Lin Tian is the eldest daughter.The two are childhood sweethearts, childhood sweethearts, like-minded, and deeply affectionate.So the parents of the two families slapped their heads, and after Geng Tie came back and forth, they got engaged.However, the night before the big wedding, Miss Lin disappeared strangely.Mother Lin: Ah Jian, don't worry, you siblings look very similar, that fool Su Mu won't be able to find out for a while.When you get your sister back, Mother will break her leg for you.Lin Jian: ...I'm not, I don't, don't talk nonsense!On the night of the wedding, Lin Jian sat on the wedding bed with her arms and legs curled up, shaking when she felt a gust of wind above her head.Lin Jian: (trembling) Sis...brother-in-law.Su Mu: (lifting the hijab) Are you sure you will still be called brother-in-law in the future?