Li Daozong
In spring 622, Duan launched an attack on Liang, capturing the eastern city of Liang's capital Shuofang, forcing Liang to withdraw to the western city. However, relief forces from Eastern Tujue arrived, and Duan withdrew. Liang subsequently sent his brother Liang Luo'er () to, with Eastern Tujue forces, attack Tang's Ling Prefecture, but was repelled by the Tang general Li Daozong.