Both systems map your personality to the cosmos, but they work on completely different calendars and logic.
Based on the Sun's position among 12 constellations at your birth. Your sign changes monthly (Aries, Taurus, Gemini…). It focuses on your Sun sign, Moon sign and rising sign.
Based on the lunar calendar year of your birth, cycling through 12 animals (Rat, Ox, Tiger…). Your year animal is just the surface — a full BaZi reading adds your month, day and hour pillars, Five Elements and Ten Gods.
Chinese metaphysics goes deeper in one way: your birth hour matters as much as your date, giving a four-pillar chart far more granular than a single star sign. Many people use both systems as complementary lenses for self-discovery.
For entertainment and self-reflection purposes only.