《资治通鉴·唐纪·唐纪十二》
再加上一路上所经过的地区，千里大沙漠，冬季风吹如刀割，夏季风吹如火烧，行人来来往往，遇见这种情况往往难逃一死。
加以道涂所经，沙碛千里，冬风如割，夏风如焚，行人往来，遇之多死。
“In addition, there is a vast desert for thousands of miles along the way, with winds as sharp as knives in the winter and as hot as fire in the summer. Travelers often die when they encounter such situations.”