 After the death of Emperor Wu's son and successor Emperor Xuan in 580, the government was seized by Emperor Xuan's father-in-law Yang Jian.The general Yuchi Jiong rose against Yang, and joining him were the generals Sima Xiaonan (司馬消難) and Wang Qian (王謙).Wang, the military commander of the modern Sichuan region, was Gao Anagong's superior, and he followed Wang's orders.