李孝恭
In 619, Xiao made a push to expand his territory to the modern Chongqing and Sichuan region, then held by Tang Dynasty. He sent Yang and Chen Puhuan () to attack Tang's Xia Prefecture (峽州, roughly modern Yichang, Hubei), but they were repelled by the Tang general Xu Shao (). In 620, the Tang general Li Xiaogong the Duke of Zhao Commandery attacked Xiao's general Du Ti () the Prince of Dongping and killed Du.