In the fifth year of Xuanhe (1123), it was the third year after Liangshan recruited troops. Wu Song lost an arm when he conquered Fang La. Although he was awarded the title of "Qingzhong Patriarch", he saw through the corruption of the court. At this time, the Jurchens were rising, the remnants of Fang La were secretly surging, and water transport to the south of the Yangtze River was repeatedly intercepted. Song Huizong wanted to transfer the old Liangshan troops away from the capital in the name of "Pingnan Pioneer".
