Application of stone

In the application of choosing a day, people have long had the practice of choosing a day. Sima Qian said, "When you look at the art of Yin and Yang, you should be detailed and taboo, which makes people shy, and the four seasons are smooth and must not be lost." It can be seen that many names of choosing a date were a technique of yin and yang in ancient times, and not all of them were nonsense. In the ancient calendar, there are mainly twenty-four solar terms, five elements or earth kings. It was not until Wei's calendar that seventy-two Hou, four positive hexagrams and Shangshu were added.

After the Tang dynasty, there were more and more calendar annotation items, and the good fortune and evil spirits were even more dazzling. However, they can still be divided into six categories:

1. Decided by traditional cadres.

It is decided by the name of the month (the zodiac).

3. It is determined by the month name and the daily branch.

4. It is decided by today's name.

5. It is decided by the year, month and day.

6. It is determined by the four seasons and the daily branch.