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 various calendars such as Gregorian calendar, Lunar calendar and Ganzhi calendar at the same time, which contains 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 good and bad luck, rushing evil, combining harm, receiving sound, dry branches, twelve gods, on duty, fetal gods, stars, moon phases, exorcism, Peng Zuji, six splendors, nine planets, fleeting time, Chinese medicine, mysterious nine planets, week, twelve zodiac signs, orientation 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, seasonal seasons, but also contains some taboos that people should abide by in their daily lives. Its contents guide the farming opportunities of working farmers in China, so it is also called farmers' calendar. The people of the Yellow Calendar are also commonly known as "general books". However, in Cantonese, because the word "Shu" in general books is homophone with the word "lose", it is also called "Tong Sheng" because of taboo.