沮渠蒙遜
Also in 423, Juqu Mengxun sent tributes to Jin's successor state, Liu Song, which Liu Yu had established in 420. Liu Yu's son Emperor Shao of Liu Song affirmed Juqu Mengxun's title of Prince of Hexi. In fall of that year, when Rouran attacked Northern Liang, Juqu Mengxun sent Juqu Zhengde to fight Rouran, but Juqu Zhengde was defeated and killed. Juqu Mengxun then created his next son Juqu Xingguo (沮渠興國) as heir apparent.