The Ten Gods are heavenly stems and earthly branches's Five Elements, and the Five Elements are Yin and Yang, all of which belong to the same category. Because the yen has ten relationships with the other seven branches, it gets ten gods. Those who kill me for officials, those who kill me for money, those who give birth to me for seals, those who give birth to me for food injuries, and those who rob me; Ten gods are divided into four auspicious gods, four evil gods and two peaceful gods. Four Gods: Andrew, Gourmet, Official and Cai Zheng. Four evils: seven kills, partial printing, hurting officials and robbing money. Two gods: more wealth than shoulders.
The calendar divides a year into 12 months with 24 solar terms, and each month contains two solar terms. Taking the beginning of the spring solar term as the first month of the year, that is, the beginning of silver moon, then every solar term with a breath is a month, each solar term can represent the first half of a month (about 15 days), and each breath can represent the second half of a month, so each month contains two solar terms. There is no need to set a leap month. Except for twelve fixed branches, ten branches are arranged in sequence.