Yang Liang
In 604, when Emperor Wen died and was succeeded by Emperor Yang, Xiao was serving under Emperor Yang's brother Yang Liang the Prince of Han, who was the commandant at Bing Province (, roughly modern Taiyuan, Shanxi). Yang Liang, not willing to yield to Emperor Yang, rebelled, a rebellion encouraged by Xiao and Wang Kui (, Wang Sengbian's son). However, when Xiao engaged Emperor Yang's general Yang Su, Yang Su defeated and captured him, and then had him executed. His sons were not killed but were seized as imperial servants, and his subordinate Chen Zhishen () took his body and gave it a proper burial.