It means that people can't sleep.
Weiyang has several meanings: 1. Central, central. Poetry · Xiaoya · Tingliao: How is the night. Weiyang here means not reaching the center, which means not half. The night is not yet in the middle of the night.
2. Soon. It is mentioned in the Yellow Emperor's Internal Scripture not far away that when the number of bandit winds and the number of torrential rains rise, the heaven and the earth do not protect each other at all times, and when they lose touch with the Tao, they will die out.
3. Not covered. "Songs of Chu": When I was still young, I was still young.
4. Boundless. "Lao Tzu": The only one is different from the other. Where do good and evil go. One must not be afraid of what one fears. What a desolate place.
5. Official names in the Han Dynasty.
6. It refers to Weiyang Palace.
7. Borrow the palace. Sun Zhiwei in the Qing Dynasty wrote in "Old Palace People" that after folding the palace clothes, they did not open the box, and they entered Weiyang with gratitude in their dreams.