Yang Liang
In 599, when Sui forces attacked Tujue's Dulan Khan, Ashina Yongyulü, Yang Liang was nominally the overall commander of the operations, but did not go to the front. In summer 600, when Dulan Khan's successor Bujia Khan Ashina Dianjue (), who was a rival claimant to the Tujue throne to the Sui-supported Qimin Khan Ashina Rangan, attacked Sui, Yang Liang was one of the four commanders (along with his brother Yang Guang and the generals Yang Su the Duke of Yue and Shi Wansui () the Duke of Taiping) sent by Emperor Wen to engage Bujia Khan, and they defeated him, although Yang Liang's contribution to the campaign was unclear.