《汉书·传·李广苏建传》
恰巧天色黑了下来，军官士兵都面无人色，可是李广的神气同平常一样，更加精神振奋地指挥军队。
会暮，吏士无人色，而广意气自如，益治军。
By chance, night fell, and the officers and soldiers were all ashen-faced, but Li Guang's demeanor was the same as usual, and he commanded the army with even greater vigor.