He had to make shelter in the snow, and as the Xiongnu didn't provide food, he was forced to forage grass from rats 'nests--a prouder man would have died in such conditions. He used his imperial messenger's staff as a shepherd's rod. The Han emperor had forgotten him.
他被迫經年累月在寒苦之地扒冰臥雪，餐風露宿（匈奴不給口糧，他掘野鼠洞裡的草根充飢，嬌貴的人早就飢寒交迫而死），而漢朝的君主早已將他遺忘。