Huyandi (Chinese: 壺衍鞮) was the son and successor of Hulugu Chanyu.

[1] Huyandi was not first in the line of succession and only became chanyu, due to a plot by his mother Zhuanqu Yanzhi and the Han defector Wei Lü.

[2] In 71 BC, Chang Hui and two other generals led a force of 100,000 to aid the Wusun against the Xiongnu.

On the way back across the Altai Mountains, the Xiongnu suffered heavy casualties from a sudden blizzard, devastating their army.

The next year the Xiongnu were attacked on all sides by Wusun, Wuhuan, and the Han.