法界觀門
Fǎjiè guānmén — the “Contemplation-Gate of the Dharma-Realm,” attributed to 杜順 Dùshùn, first patriarch of the Chinese Huáyán school; the foundational text of Tang Huáyán contemplative practice, surviving only embedded in 宗密 Zōngmì’s later commentary [[KR6e0101|Zhù huáyán fǎjiè guānmén]] (T1884).