Dàshèng kāi xīn xiǎn xìng dùn wù zhēn zōng lùn 大乘開心顯性頓悟真宗論
Treatise on the Mahāyāna Opening of the Mind, Revealing the Nature, and Sudden Awakening to the True School
A Dūnhuáng-manuscript early-8th-century Chán doctrinal treatise by the lay practitioner 慧光 Huìguāng 慧光 (lay surname Lǐ 李, hào Dàzhào jūshì 大照居士), a disciple in the Dōngshān-Northern-School line who subsequently studied also under the Hézé 荷澤 milieu
About the work
A one-juan doctrinal treatise presented as jí shì 集釋 (“collected and explained”) by Huìguāng. Taishō T85 n2835. Non-commentary; commentedTextid omitted. The text preserves a transitional-phase early-Chán doctrinal voice — the early-8th century Dōngshān-tradition Northern-School training with later incorporation of Southern-School (Hézé Shénhuì) formulations.
The doctrinal content centres on the complementary practices of guān xīn 觀心 (“observing the mind”) and zhù yì 注意 (“concentrated attention”), with three progressive sānmèi 三昧 stages culminating in fǎxìng sānmèi 法性三昧 (“*dharma-*nature samādhi”). The title’s dùn wù 頓悟 terminology marks the Southern-School-era framing, though the practical content is continuous with Northern-School guān xīn literature.
Tiyao
Not a WYG text; no 四庫 tíyào exists. The text’s own opening serves as auto-preface: “Now the great Way fuses the mind and reveals the actual single principle; the worthies and sages before and after all take this gate as their aim. … The one who awakens, [realises] the three realms are mind-only; the one who does not awaken, remains asleep.” The signature line shāmén Dàzhào jūshì Huìguāng jí shì 沙門大照居士慧光集釋 identifies the author.
The third-person self-description at lines 33ff — “There is a lay-practitioner, lay-surname Lǐ, name Huìguāng [variant 惠光], from Yōngzhōu Chāng’ān 雍州長安; his dharma-name is Dàzhào; he disregards honour and profit, aspires to bodhi; he earlier served Master Ān 安闍梨, later served Héshàng Huì 會和尚, having intimately received kǒu jué 口訣 oral-transmissions and secret teaching-instructions from both…” — identifies the teacher “Ān” as probably Lǎo’ān (Sōngshān Huìān 嵩山慧安, c. 582–709, a dharma-heir of Hóngrěn 弘忍) and “Huì” as probably Hézé Shénhuì 荷澤神會 (684–758), making the text a product of the Northern-to-Southern transition at Chāng’ān in the mid-8th century.
Abstract
The combination of teachers — Lǎo’ān (Northern-School grandfather) and Shénhuì (Southern-School polemicist) — places Huìguāng uniquely at the intersection of the two eighth-century Chán schools, and the Zhēn zōng lùn accordingly preserves a doctrinal synthesis drawing on both streams. The text’s preservation only in Dūnhuáng manuscript form (Taishō T85 n2835) reflects its location outside the later Southern-School lineage mainstream: like other Northern-School materials, it did not successfully transfer into the Sòng canon.
Dating bracket: notBefore 720 (earliest plausible composition in the active career of a disciple of both Lǎo’ān and Shénhuì), notAfter 850 (Dūnhuáng paleographic terminus ante quem). Probably mid-8th century.
Translations and research
- McRae, John R. 1986. The Northern School and the Formation of Early Ch’an Buddhism. Hawai’i. Discusses the Zhēn zōng lùn as part of the Dūnhuáng Chán corpus.
- Yanagida Seizan 柳田聖山 1967. 《初期禪宗史書の研究》. Hōzōkan.
- Faure, Bernard. 1997. The Will to Orthodoxy. Stanford.
Other points of interest
The author-designation jūshì 居士 (“lay practitioner”) rather than sēng / shāmén 僧／沙門 monastic-style marks Huìguāng as a layman — unusual among Chán treatise-authors in this period, and indicative of the broadening of Chán authorial authority beyond the strict monastic community during the Kāiyuán-Tiānbǎo transitional decades of the mid-8th century.