Give us your birth date, time and sex, and Wofu instantly casts a complete chart — all 12 palaces, 14 major stars, supporting and challenging stars, and the Four Transformations. It runs on the same astronomical calendar algorithm as professional astrology software, so every star's placement is a deterministic calculation, not something an AI guessed. Your chart is the foundation every reading is built on — get the foundation wrong and everything after it falls apart. Many tools out there, and even general-purpose AI, place stars incorrectly: it looks convincing but it's really just made up. Wofu uses a deterministic calendar engine, so the placement of the 14 major stars and over a hundred other stars is verifiable and error-free. You enter your solar or lunar birth date, birth time (the two-hour period) and sex; the system converts the solar terms and time period, fixes your Life palace, then places Zi Wei, Tian Ji, Tai Yang, Wu Qu and the other major stars along with the Four Transformations by classical method. The tricky edge cases — twins, births across midnight, leap months — are all handled correctly. What you cast instantly for free is your natal chart. Once you log in, the same chart can also layer in the major-cycle and annual views, so you can switch between time frames and see how your fortune unfolds. Want to understand each star and palace better? Browse the star and palace cards in the learning center. Want a plain-language read of the whole chart? Let the AI astrologer write it up as a natal, major-cycle and annual reading.