Late-Míng Buddhist monk, principal disciple of Yúnqī Zhūhóng 雲棲袾宏 (袾宏, 1535–1615), the most influential master of the late-Míng Pure-Land/Chán synthesis. Sobriquet Sìkōng 似空 (“apparent emptiness”); commonly cited as Yúnqī Sìkōng 雲棲似空. Lifedates unrecorded; active in the years immediately before and after his master’s death (the Jīngāng jīng bēi preface of KR6c0063 is dated 1618, three years after Yúnqī’s death). DILA characterizes him as 法門龍象，親承提命 (“a dragon-elephant of the dharma-gate, personally receiving the master’s instructions”); commissioned by Yúnqī to undertake the Jīngāng commentary, gōu xuán zuǎn yào, què yī shān fán, jí zhū jiā zhī dà chéng 鈎玄纂要，搉一刪繁，集諸家之大成 (“hooking the profound and gathering the essential, weighing one against another and pruning the profuse, gathering a great compendium of the various schools”). Listed among Yúnqī’s “topmost disciples” (shàngshǒu dìzǐ) in Bāshíbā zǔ dàoyǐng zhuànzàn j. 4 (KR6q0045) by Hānshān Déqīng 德清. His sole surviving work is the two-juan Jīngāng jīng bēi 金剛經鎞 (KR6c0063, X25 no. 475).