Xue Gang's anti-Tang Dynasty is one of the traditional Chinese stories. The book describes Xue Gang as the son of the two Liao kings, with a good personality and uneven personality, who caused a big disaster because he killed the prince and frightened the holy driver during the Lantern Festival. His father, Xue Dingshan's family, was destroyed by Wu Zetian. Xue Gang fled to Western Liao and gathered a large army, and later assisted Li Xian, the king of Luling, to fight against Wu Zetian.