What does the old imperial calendar mean?

The old yellow calendar generally refers to the modern name of the yellow calendar. The commonly used modern yellow calendar can display many calendars such as solar calendar, lunar calendar and official calendar at the same time, and 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 marriage, 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 lunar calendar in China, with many characters indicating the good luck 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" and "lose" in Tongshu are homophonic, it is also called "Tong Sheng" because of taboo. The main contents of the Gregorian calendar are the schedule of the twenty-four solar terms, the good and bad luck of each day, the luck of the zodiac and so on.