---
title: "Hoang Ốc (Six-House Building Ages) (越南六宅運)"
method: GET
path: "/api/trpc/hoangOc.check"
tags: ["Vietnamese"]
---

# Hoang Ốc (Six-House Building Ages) (越南六宅運)

`GET /api/trpc/hoangOc.check`

## Request

- Base URL: `https://api.asktian.com`
- URL: `https://api.asktian.com/api/trpc/hoangOc.check`
- Auth: HTTP bearer

HOANG ỐC — the Vietnamese six-house age system every family consults before building (and traditionally before marrying): each counted age (tuổi mụ) falls in one of six cung — Nhất Cát, Nhì Nghi and Tứ Tấn Tài auspicious; Tam Địa Sát, Ngũ Thọ Tử and Lục Hoang Ốc to be avoided — and a house is not begun in a bad-cung year (families mượn tuổi, borrow an elder's auspicious age, rather than wait). HALF OF THE SAO HẠN ROUND'S DEFERRAL, CLOSED BY DIAGNOSIS: earlier probes found inconsistent rows across sites; the full-rule re-probe showed WHY — the tradition's two formulations (decade milestones 10→Nhất Cát…60→Lục; and the digit-sum (tens+units) mod 6) are ALGEBRAICALLY IDENTICAL, proven at load over every age 10–99, while a widespread CORRUPTED '+6 years same cung' list circulates that breaks at every decade crossing (21 is Tam Địa Sát by both true methods, not Lục — pinned at load so the corruption can never creep in). Two witnesses with concordant worked examples (33 → Lục Hoang Ốc, 38 → Ngũ Thọ Tử) asserted at load. The tuổi mụ counted-age convention disclosed; the sibling hạn-8 layer remains DEFERRED by name (its published rows are still mutually inconsistent). Vietnamese becomes four systems. Pure compute, no LLM.

Cost: 1 TIAN Points per call. tRPC procedure `hoangOc.check`.

## Query parameters

- `input` string

## Response `200`

tRPC result envelope

- TrpcResult: tRPC HTTP response envelope.
  - `result` object
    - `data` object: The procedure's return value (system-specific).

---

[API](https://skmtc.dev/asktian/apis/asktian-metaphysics-api.md) · [All operations](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/llms.txt) · [OpenAPI document](https://skmtc.dev/asktian/apis/asktian-metaphysics-api/revisions/3c8fdc979206?raw)