愁多夜长

Explanation: Feeling gloomy because of the hardly sleep last night, was difficult to send a long time. 　　Source: "Nineteen," Mang Tung, Bobby cold to the north wind and miserable Juan Ho! Night long to know a bit more, Yang Guan stars out. " 　　Examples: Poems to make, especially when the width, the night a bit more longer. ★ Songhua Yue "Cui Wei Nan Zheng Li, son of times recorded in autumn rhyme"