In Guanzi, "There are six qi in the sky, namely, yin, yang, wind, rain, gloom and brightness." What do you want to express?

It means that the sky has six meteorological characteristics, namely cloudy, sunny, windy and rainy, and there is no moon at the end of the lunar calendar and the full moon on the fifteenth day.

Yin and Yang storms are easy to understand, and they all belong to the weather that modern people are familiar with. Ancient people attached great importance to the moon at night because there was no electric light, so they regarded the lack of the moon and the full moon as weather phenomena.

Hui: The last day of each month in the lunar calendar.

Ming: The roundest and brightest day of the moon is the fifteenth day of the lunar calendar.

Dark, that is, Wang Shuo, the first day and fifteenth day of the first lunar month, that is, Shuori and Wangri.