Frequently asked questions (常见问题)

No. Readings come from a deterministic rules engine that encodes classical procedures — no large language model writes your results, and every line names the classical rule behind it. See How It Works.

The engine reproduced a professionally produced, paid fengshui audit to the digit — 27/27 flying-star palaces, 32/32 directional assignments — and matches commercial chart products character-for-character on the calendar layer. Deterministic output is what makes that test possible: run it twice, compare against a benchmark.

BaZi (八字) four pillars (Day Master strength, useful god (用神) selection by support-and-restrain (扶抑), seasonal adjustment (调候), illness-and-medicine (病药) and mediation (通关), Ten Gods, luck cycles (大运)), Eight House (八宅) personal directions, Flying Stars (玄空飞星) for buildings with annual overlays, Wenchang (文昌) study positions, and day-officer (建除) date selection. Each is explained in the Learn library.

No — "deterministic" describes the computation, not your future. The tradition itself ranks fate as one factor among several ("first fate, second luck, third fengshui", 一命二运三风水). Precision matters so the actionable layers — colours, directions, dates, rooms — rest on solid ground.

Your measured facing sits near a chart boundary (mixed facing, 兼向 / straddling a boundary, 骑线). A fraction of a degree decides which flying-star chart rules the house, so the engine computes both candidates and tells you to re-measure on site — instead of silently picking one.

Yes. Mark the time as unknown and the engine computes everything that does not need the hour pillar, flagging the sections that do rather than faking them.

Only what you enter: names or labels, birth data, and any floor plans you upload. It lives in a workspace behind an unguessable private link — no account, no email, no password. Anyone you give the link to can view the workspace, so treat it like a key.

Workspaces expire automatically after about six months of inactivity. Revisiting your link keeps it alive.

No. Your data exists to compute your readings, full stop.

Yes — everything is free during early access. If paid tiers arrive later, the free chart and the citation-first principle stay.

Up to 8 people and up to 6 homes — enough for a family comparing properties, with a side-by-side battlecard across every analyzed home.

Readings are bilingual throughout (English + Simplified Chinese), and the Chinese guides (中文) mirror the Learn library in Chinese.