What's the name of Zhao Kuangyin Li Yu's novel?

According to the novel Three Falls in Song Taizu, the protagonists are Zhao Kuangyin and Li Yu.

Song Taizu Sanxia Nantang is a novel written by a good ancient master in the Qing Dynasty. Its full name is Shouzhou City, the place where Zhao Kuangyin was trapped in the southern Tang Dynasty. It is also known as The Story of the Chivalrous Woman and The First Chivalrous Woman. It has 53 chapters and was written in Xianfeng period of the Qing Dynasty.