Wúzhǔn Shīfàn 無準師範

Southern-Sòng Chán master (1178–1249) in the Línjì 臨濟 — Yángqí 楊岐 — Húqiū 虎丘 line; abbot of Jìngshān 徑山. Teacher of Shàotán 紹曇 and an influential figure in the transmission of Chán to Japan.