Eight-character interpretation of five tones

2. Wuyin period is the trunk and branch period, which is a method of using 60 different groups of trunk and branch as time markers according to the established method.

This is an important part of the official calendar.

The established way is to divide 1 day into 12 hours. From 23 o'clock in the evening, the first hour is marked from Jiazi, which is equivalent to two hours now, and then it is marked every two hours in turn, and the branches are constantly circulating.

5. The time system of cadres and branches is an important part of the traditional calendar in China.

6. Because the pure number "60" is cyclical, this system is not affected by the improvement of astronomical level and calendar, nor is it interrupted by dynasties, and it will not be chaotic because of the division of the country.

7. China has a long history. The calendars of different dynasties (including the chronology of imperial dynasties) are different in different periods, but the cycle of branches never stops.

8. Consistency everywhere.

9. According to research.

102700 years, about1000000 days, not a day without interruption.

1 1. Therefore, the time system of branches and branches runs through various calendars like a line, which plays an important role in the integrity and continuity of historical materials in China.