乞伏乾帰
In 400, Qifu Gangui suffered a major defeat at the hands of the Later Qin emperor Yao Xing, and most of his state was seized by Later Qin. Qifu Gangui concluded that he could not sustain a state any more, and instructed his officials to surrender to Later Qin, while he himself surrendered to Southern Liang's prince Tufa Lilugu, who welcomed him as an honored guest. Tufa Lilugu's brother Tufa Juyan (禿髮俱延) suspected Qifu Gangui's intentions, and suggested that Tufa Lilugu exile him to the Yifu (乙弗) tribe (probably west of the Qinghai Lake), a suggestion that Tufa Lilugu rejected. However, worried that Qifu Gangui would try to reestablish his state, he sent an army to watch over him. Qifu Gangui, fearing that he would be executed, then regained trust from Tufa Lilugu by sending Qifu Chipan, his brothers, and their mother to the Southern Liang capital Xiping as hostages. He himself, however, as soon as the Southern Liang guard was down, fled to Fuhan (枹罕, in modern Linxia Hui Autonomous Prefecture, Gansu) and surrendered to Later Qin.