What's the difference between the yellow calendar and the perpetual calendar?

There is no difference. They refer to the same calendar, but they are called differently.

The yellow calendar is also called the old yellow calendar, the imperial calendar, the children's calendar and the perpetual calendar. , is a kind of almanac that can display Gregorian calendar, Lunar calendar, Ganzhi calendar and other calendars at the same time, and has a large number of rules and contents related to seeking good fortune and avoiding evil.

The main contents of the Gregorian calendar include: twenty-four solar terms, avoiding bad luck, rushing evil, combining evil, radio, dry branches, twelve gods, on duty, fetal gods, stars, moon phases, evil spirits, jealousy of Peng Zu, six splendors, nine planets, fleeting time, traditional Chinese medicine, mysterious nine planets, weeks, zodiac signs, directions and so on.

Historical origin

Almanac is a code of conduct followed by ancient emperors and a calendar promulgated by emperors, so people call it "imperial calendar"; After the Revolution of 1911, the imperial system was overthrown and the "imperial calendar" was rewritten as the "yellow calendar".

The yellow calendar not only includes astronomy, meteorology, seasons and seasons, but also contains some taboos that people should abide by in their daily lives. Its content guides the farming opportunity of working farmers in China, so it is also called the farmers' calendar. People in the Gregorian calendar are also commonly known as "general books". However, in Cantonese, because the word "Shu" in Tong Shu is homophone with the word "lose", it is also called "Tong Sheng" because of taboo.