Let's take a look at whether the zodiac is based on the lunar calendar or beginning of spring.

On the first day of the first month, the Chinese zodiac was changed.

The ancients divided the stars near the ecliptic and equator into "28 stars". Twenty-eight nights also represent an animal In ancient times, Sunday was divided into twelve parts, represented by twelve branches. Twelve branches belonged to the zodiac, and the zodiac had a corresponding relationship with twenty-eight stars.

Jupiter runs once a week for twelve years, and the annual branching order can be determined from Jupiter's position. Yu Han, Fang Shan and Ji Shu thought that every twelve years, "three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old, three years old and three years old".

The ancestors of primitive society often used some animals, inanimate objects or graphics of natural phenomena as protectors and symbols of their clans, that is, totems. The mixed image of man and beast in Shan Hai Jing is an ancient totem god. The totem of Xia nationality is bear or fish, the totem of Shang nationality is blackbird, and the totem of Zhou nationality is dragon, bird, turtle, dog and tiger. ? Zodiac animals are imaginary except dragons, and the rest are daily visible.