Chinese astrology classes signs as Yin or Yang, with years ending in an even number being Yang and years ending in odd numbers being Yin.

Besides Chinese astrology, Western astrology splits the twelve zodiac signs into masculine and feminine.

The air (Aquarius, Libra, Gemini) and fire signs (Leo, Aries, Sagittarius) are masculine or Yang.

The earth (Taurus, Capricorn, Virgo) and water (Pisces, Scorpio, Cancer) are feminine or Yin.

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