Fall in Love with My Little Wife

"Marry me and I'll give you everything you want." He said to her at the engagement banquet between the two major groups. "What are you talking about? This is your and your sister's engagement party." She replied in surprise. "What if I said, I fell in love with you." He said teasingly. Originally, his sister was the one who held his hand for the rest of his life, but suddenly, everything changed and the bride became her. Seeing her sister talking coldly to her, her heart trembled. "Why? It must be me." She smiled a little reluctantly, but still calmly, but at this time the man smiled calmly: "Because your surname is Shangguan." Suddenly looking back, it turns out that everything was just a conspiracy...[The introduction is incompetent, please read the text] Hehe