Series

Spirit Stars Explained

The 116 spirit stars are computational rules, not supernatural beings. How Tai Sui, San Sha, Tian De, and the rest actually work.

Part 1

Don't Offend the Grand Duke: The Tai Sui System Explained

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

The Virtue Stars: Why Some Days Are Good for Everything

They appear in every activity's suitable-stars list. They can override most taboo stars. Understanding them is understanding half the system.

Part 3

Yellow Road, Black Road: How the Almanac Sorts Days Into Lucky and Unlucky

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

The Twelve Day Officers: How the Almanac Assigns a Character to Each Day

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

The Monthly Stars: How 40 Spirits Shape Each Month's Character

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

How Stars Became Rules: The Astronomical Origins of the Spirit Star System

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.