In the ninth year of Tianbao, Nanzhao rebelled against the Tang Dynasty under the conspiracy and instigation of three people from the Nine Heavens: Jun Tianjun, Youtianjun, and Zhu Tianjun. The martial arts heroes from the Central Plains attacked the Nanzhao Imperial Palace, but Li Tan, the king of Jianning, was finally defeated by the strategies of Li Fu and Tang Jian and escaped quietly. However, after years of war, Nanzhao's rebellion caused Li Tang to lose more than 200,000 troops, and his decline was beginning to show. Li Tan was unwilling to stop there, and set his sights on the Central Plains Wulin, and finally decided to start encroaching on the Hidden Sword Villa. Then he personally led his hundreds of elite soldiers to raid the Cangjian Villa under disguise and wounded Ye Ying, the owner of the villa. At the risk of the lives of the villa's disciples, he secretly controlled the Cangjian Villa and lay dormant.