In 635, under the general Li Jing, Tang forces made a major crippling attack on Tuyuhun, forcing Murong Fuyun to flee. The Tuyuhun nobles were resentful of the Prince of Tianzhu, and Murong Shun led them in killing the Prince of Tianzhu and then surrendering. As Murong Fuyun was killed by his subordinates during flight, Emperor Taizong created Murong Shun the dual titles of Prince of Xiping and Zhugulüwugandou Khan (or Gandou Khan in short), to succeed Murong Fuyun.
