Built on the traditional almanac, not guesswork.

The traditional almanac system

Each day's overall verdict (吉, 平 or 凶) follows the traditional Dong Gong (董公) date-selection system, worked out from the day's solar month and its place in the sixty-day cycle.

Each day also carries one of the twelve Day Officers and a published verdict for eight everyday activities: 宜 (suitable), 忌 (avoid) or neutral. The day verdict and the activity verdicts are separate layers; one never overrides the other.

Checksum-verified solar terms

The Chinese calendar turns on the 24 solar terms. MyTongShu uses a fixed table of every solar-term moment from 1900 to 2101, calculated with astronomical methods.

The table is checked against a published checksum every time it loads, so any change to it is detectable.

How we read your chart

Your BaZi (八字) chart comes from your birth date, the clock time recorded where you were born, and your birthplace. We use that recorded local time as it is, without guessing at corrections.

If you were born very close to a solar-term change, your chart can't be fixed reliably, so we don't guess: Personal isn't offered for that birth, and the check happens before you pay.

The same answer every time

100% calculation consistency within each MyTongShu method version: the same validated inputs and method version reproduce the same calculation output.

No AI calculates or changes your results. Readings come from the method itself.

What we don't do

We don't promise outcomes, sell lucky charms or use fear to sell. The almanac is a traditional planning reference: practical, legal, medical, financial and safety advice always come first.