 Later, with Wu Yunzhao's help, Li Zitong became one of the major forces fighting against the Sui Dynasty.During the martial art test in Yangzhou, as mentioned above, a foreign warrior called Zuo Xiong killed Wu Yunzhao with a mechanism device hidden in Zuo's horse's tail.Some people argue that Wu Yunzhao might have an archetype called Yang Xuangan (杨玄感), who had a notable social statues but rebelled after his father Yang Su’s (杨素) death.