夜不成寐

Explanation: Sleep soundly asleep. Describe something by heart, how can not sleep at night. 　　Source: Song Mai, "Yi Jian Zhi Juan Ba Qian Zhou B tower" made tomorrow and Xian Gong 'Ru-night to what the? I have heard that the old soldier clouds hold off, the property so the more strange, will be out every evening. 'I see are a result of that yesterday. Act on that day alone, actually awake at night. "