At twenty-six, Si Nanyu approached Gu Yancheng, the heir to the Gu family, as his “substitute lover.” On the surface, she was a materialistic white lotus; in reality, she was seeking revenge for her twin sister, Xia Weiran, who had died a tragic death. She set up an elaborate trap using a tried-and-true scheme, making Gu Yancheng fall in love with her even as she fell in love with him.