Déshān Xuānjiàn 德山宣鑒
A Tang-period Chán master famed for his iconoclastic stance; before his awakening he had been a Diamond Sūtra exegete known as “Diamond Zhōu,” and he is remembered for ceremonially burning his own Qīnglóng shūchāo 青龍疏鈔 as a gesture of repudiating verbal-exegetical Buddhism.