Tianyu Jing 天玉經 doubtful — surfaces in the Song (per Siku)
The Heavenly Jade Classic: where the Three-Cycle line's trigram architecture — Jiangdong, Jiangxi, the parents and the Three Universal Trigrams 父母三般卦 — is laid out, in verses the catalogue declined to either authenticate or reject.
Classical Texts Register · ← all 28 titles
Identity card
| Field | Value |
|---|---|
| Title | 天玉經 Tianyu Jing ("Heavenly Jade Classic") |
attributed_author | Old tradition attributes it to the Tang master Yang Yunsong 楊筠松 |
attribution_status | doubtful 存疑 — the Siku note observes that neither Zheng Qiao 鄭樵 nor Chen Zhensun 陳振孫 records the title, and that it reached transmission only when Wu Jiancheng 吳見誠 of the Song "met a true man" who imparted it |
| School | Three-Cycle Xuankong 三元玄空 |
| Siku notice | Siku tiyao on ctext.org |
What it contains
Per the collation register:
- The "one trigram of Jiangdong" 江東一卦, "one trigram of Jiangxi" 江西一卦, and the "eight spirits of south and north in one trigram" 南北八神一卦.
- The parents and Three Universal Trigrams 父母三般卦.
- Outer chapters 外編: the four-classics five phases 四經五行 and the xuankong trigrams 玄空卦.
What the Siku cataloguers concluded
The notice finds the title absent from Zheng Qiao's and Chen Zhensun's bibliographies, dates its transmission to the Song (至宋吳見誠遇真人始授), and rules: 「亦至宋始出」「真偽可置勿論」 — "it too only surfaced in the Song; whether genuine or false may be left aside." Siku Quanshu Zongmu, vol. 109.
"May be left aside" is itself a documented verdict and we report it as such: the register's status is doubtful 存疑, the attribution to 楊筠松 is never asserted as fact, and no stronger claim runs in either direction on this page.
Where it sits in the tradition
Matrix row: Three-Cycle 三元 main body ◎, Form 形巒 partial ○. Part of the 地理辨正 canon (see the Dili Bianzheng entry). The trigram schemes here feed the Xuankong chart arithmetic our engine implements; the open reading questions are in the School Dispute Register.
Related
青囊經 · 青囊奧語 · 沈氏玄空學 · full register