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 [[KR6e0073|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 [[KR6e0001|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 [[KR6e0081|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.