Series
The 116 spirit stars are computational rules, not supernatural beings. How Tai Sui, San Sha, Tian De, and the rest actually work.
Part 1
Everyone knows the saying "don't break ground above Tai Sui's head." Almost nobody can tell you what Tai Sui actually is. The answer is Jupiter. The twelve-year cycle IS Jupiter's orbital period, mapped onto the Earthly Branches and turned into a directional taboo system.
Part 2
They appear in every activity's suitable-stars list. They can override most taboo stars. Understanding them is understanding half the system.
Part 3
Most almanac apps show "Yellow Road Day" as the primary rating. But the underlying mechanism is a 12-spirit rotation where 6 spirits are beneficial and 6 are harmful, each with a name, an Earthly Branch, and an astronomical rationale.
Part 4
You've seen "Open Day" and "Close Day" in every almanac activity list. Now here's the system behind them. Each day gets one of twelve officers — and each officer has a personality.
Part 5
Over forty spirits rotate on a monthly cycle, each derived from the Three Harmonies framework. They explain why the same Jianchu day-type in different months can produce different ratings.
Part 6
The spirit stars aren't arbitrary. Each one traces back to something real — a planet, a constellation position, a seasonal marker. The system is astronomy that stopped updating.