What do you mean, one month? What is a month and what is a month?

1, monthly construction, generally refers to twelve branches, such as Jian Zi, Jian Chou, Yin Jian, etc. "Sword" represents the direction of the top of the bucket handle of the Big Dipper. In ancient astronomy, bucket handle and the Big Dipper were called "swords". Years old were divided into twelve days in the calendar, and bucket handle took turns to call them "December swords". December is a solar month based on 24 solar terms.

2. In addition, the sword also refers to the twelve characters representing the current situation, namely, sword, except, full, flat, fixed, holding, breaking, danger, success, closing, opening and closing, and the moon sword refers to the monthly branch of the divination month, also known as the moon order and the moon general. The establishment of the moon on the 30th of that month has a direct impact on the rise and fall of divinatory symbols. The five elements change periodically in the four seasons and December, and the monthly branch of the season is the monthly construction.

3. The moon, the concept of ancient astronomy. That is, the number of solar cycles refers to the twelve positions (twelve times) that the sun moves through in the zodiac with the first anniversary as the cycle. In ancient times, it was imagined that there were twelve gods protecting the law, that is, December. Sometimes I call the moon "the sun". It is worth mentioning that the standard starting point of the zodiac is the vernal equinox, and holidays are ordered to pass the palace; The starting point of the twelve generals is rain, and the gas will change.