What does the old imperial calendar mean?

The old yellow calendar generally refers to the modern name of the yellow calendar. The yellow calendar commonly used in modern times can display various calendars such as solar calendar, lunar calendar and official calendar at the same time, among which there are a large number of almanac related to the rules and contents of seeking good fortune and avoiding evil. It can be used to choose auspicious days for getting married, breaking ground, traveling and opening business, while the real old calendar refers to the chronology showing cadres and branches.

Gregorian calendar is a calendar based on the China lunar calendar, with many characters indicating good or bad luck of a day. According to legend, it was created by Xuanyuan Huangdi, so it is called Huangli, and it is also commonly known as "Tongshu" among the people. However, because the word "book" in Tongshu is homophonic with the word "lose", it is also called "Tong Sheng" because it is taboo. The main contents of the Gregorian calendar are the date table of the 24 solar terms, the good and bad luck of each day, the fortune of the zodiac and so on.