This paper discusses the kànhuà technique developed by the Chinese Línjì (Jpn.: Rinzai) master Dàhuì Zōnggǎo (1089-1163) that became a widespread form of meditation in East Asian Zen. Kànhuà meditation focuses on the keyword or “punch line” (Ch.: huàtóu, Jpn.: watō, Kor.: hwadu) of puzzling Chán “encounter dialogues” (or kōan stories) associated with past Chán (Zen) masters. Dàhuì insisted on a...