What changes a result?
Birth location, historical timezone, solar-term boundary and explicit convention choices can change a chart. Read the comparison guide.
BaZi, explained without mystique
Use Four Pillars as context for a year, not as a substitute for judgement.
BaZi (八字) is a traditional birth-chart framework built from the year, month, day and hour pillars. MyTongShu uses an approved, versioned method and keeps the personal result inside your account.
How it meets Tong Shu
General date facts remain deterministic. Personal context adds an owner-scoped comparison and plain-language priorities for the annual guide.
What it cannot do
It cannot guarantee health, wealth, legal, relationship or business outcomes. Use qualified professionals and observable evidence for high-stakes decisions.