rose to try to revive Baekje. They welcomed the Baekje prince Buyeo Pung back from Japan to serve as king, with Juryu (주류, 周留, now Seocheon County, South Chungcheong) as their headquarters. They put the Tang general Liu Renyuan () under siege in Sabi. Emperor Gaozong sent the general Liu Rengui, who had previously been demoted to commoner rank for offending Li Yifu, with a relief force, and Liu Rengui and Liu Renyuan were able to fight off the Baekje resistance forces' attacks, but were themselves not strong enough to quell the rebellion, and so for some time the armies were in stalemate. Meanwhile, Su advanced on the Goguryeo capital Pyongyang and put it under siege, but was unable to capture it quickly. In spring 662, after the general Pang Xiaotai () was defeated by Goguryeo forces at Sasu River (蛇水, probably Botong River) and was killed along with his 13 sons, Su ran into harsh snowstorms and withdrew. Around the same time, after the death of the Huige chief Yaoluoge Porun (), who had been obedient to Tang, Yaoluoge Porun's nephew Yaoluoge Bisudu () rose in rebellion with the Tongluo () and Pugu () tribes in conjunction with other Tiele Confederation tribes. Emperor Gaozong sent the general Zheng Rentai () to attack the Tiele, but while Zheng was initially victorious, his officers became bogged down in pillaging and eventually suffered great losses after being caught in poor weather. Emperor Gaozong instead sent Qibi, who was ethnically Tiele, assisted by Jiang Ke, to Tiele to try to persuade them to surrender. Qibi was able to do so, and rebel leaders were arrested and turned over to Tang. Qibi executed them and ended the rebellion. Meanwhile, for reasons unknown, also in 662 Emperor Gaozong sent the general Su Haizheng () to attack Qiuzi and ordered Ashina Mishe and Ashina Buzhen to assist him. Ashina Buzhen, who had a rivalry with Ashina Mishe, falsely informed Su that Ashina Mishe was set to rebel and would attack the Tang army, and Su responded by ambushing Ashina Mishe, killing him and his chief assistants. The Western Turkic Khaganate tribes, angry over Ashina Mishe's death, largely turned away from Tang and submitted to the Tibetan Empire instead, and when Ashina Buzhen died later that year, Tang influence in the region was greatly reduced. During these years, Li Yifu had been, due to favors from Emperor