남연
Later in 409, the Jin general Liu Yu launched a major attack on Southern Yan, which sought aid from Later Qin. Initially, Yao Xing sent messengers to try to persuade Liu Yu to withdraw, and also sent a relief force commanded by Yao Qiang (姚強), but was forced to withdraw Yao Qiang's force when he suffered a major loss at Liu Bobo's hands and was nearly captured. Without aid from Later Qin, Southern Yan fell to Jin in early 410.