How is the zodiac determined?

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In astronomy, there are 13 constellations on the ecliptic, and one more constellation than astrology is Ophiuchus. In astrology, the zodiac 12 is synonymous with the orientation of the universe. Zodiac 12 represents 12 basic zodiac signs. When a person is born, the stars fall into the position of the zodiac, which just shows a person's innate character and talent. Zodiac 12 symbolizes the psychological level, and the zodiac reflects a person's behavior. Zhan constellation is essentially a western superstition.