What does twelve earthly branches mean?

Twelve earthly branches: symbols used by the ancients to record time.

The twelve earthly branches, also known as the twelve branches, are the general names of Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai.

Pronunciation of the twelve earthly branches: Zi (zǐ), Ugly (chǐu), Yin (yín), Mao (m ǐ o), Chen (chén), Si (s), Wu (), Wei (wèi) and Shen (shēn).

Represents Beijing time: Zishi (23: 00 to 0 1: 00), Ugly Time (0 1 to 03: 00), Yin Shi (03: 00 to 05: 00), Shi Mao (05: 07 to 09: 00), Shi Si (09 Wechsler (from 13 to 15), Shen Shi (from 15 to 17), You Shi (from 17 to 19), Qi Shi (from 19).

According to the theory of yin and yang, it can be divided into yin branch and yang branch:

Yang branch: Zi, Yin, Chen, Wu, Shen, Xu;

Yin branch: ugliness, hair, division, health, unitary and sea.