宵旰的解释

◎ 宵旰 xiāo-gàn

[getting up before dawn and eating late ——busy with state affairs;labor incessantly on duty] 〈方〉∶宵衣旰食,即天不亮就穿衣起床,天晚了才吃饭歇息

宵旰忧虞轸。——唐· 杜甫《秋日夔府咏怀一百韵》