Dahui Zonggao (Ta-hui Tsung-kao, Daie Soko), 1089-1163. Dharma-heir of Yuanwu Keqin (compiler of the Blue Cliff Records) in the Zen Linji Lineage. Famous proponent of koan introspection and huado koan practice and critic of silent illumination meditation. Attempted to poularize Chan through simplifying the practice into concentrating on "Wu" (Mu). In some writings Dogen used him as a symbol of misunderstandings of practice. Tremendously influential for the Korean Son/Hwaom master Pojo Chinul.