Dù-shùn 杜順 (557–640), monastic name Fǎ-shùn 法順, posthumously Dì-xīn zūn-zhě 帝心尊者 (“Reverend of the Imperial Heart”) — a title bestowed by Tang Tài-zōng — and conventionally known as the Huáyán hé-shàng 華嚴和尚 (“Huáyán Master”); the traditional first patriarch of the Chinese Huáyán 華嚴 school. Lay surname Dù 杜, native of Yōngzhōu 雍州 (the Cháng’ān region). Per the Xù gāosēng zhuàn 續高僧傳 (T2060) and the Huáyán-zōng qī zǔ xíng jì (J / B005), he was an early-Suí dhyāna practitioner who took ordination under Sēng-zhēn 僧珍 of the Yīn-shèng-sì 因聖寺 and developed a deep meditative-doctrinal engagement with the Avataṃsaka jīng (the older 60-fascicle version). His teaching combined contemplative meditation with the Avataṃsaka’s vision of the dharma-realm — earning him the popular title Huáyán hé-shàng — and he was associated with miraculous events that became standard topoi of subsequent Chán-Huáyán hagiography.
Two short works are traditionally attributed to him: the Huáyán wǔ jiào zhǐ guān 華嚴五教止觀 (T1867, 1 fasc.) and the Fǎjiè guānmén 法界觀門 (which survives only embedded in 宗密 Zōngmì’s later commentary T1884). Modern scholarship (Gimello 1976, Hamar 2007) is somewhat sceptical of these attributions — both works show doctrinal features more characteristic of the early-Tang Huáyán synthesis (Zhìyǎn → Fǎzàng) than of the Suí-Tang transition — but the traditional ascription remains current. Tang Tàizōng 太宗 invited him into the inner palace for spiritual instruction; he is reported to have died in 640 at the Yīnshèngsì in Cháng’ān at age 84. His principal disciple was 智儼 Zhìyǎn (602–668), who established the Huáyán school as a doctrinal lineage at the Zhìxiāngsì on Mt. Zhōngnán.