Case 22: Xuefeng’s Turtle-Nosed Snake
- Title in Sullivan (2021): Xuefeng’s Turtle-Nosed Snake
- Title in Cleary and Cleary (1992): Hsueh Feng’s Turtle-Nosed Snake
- Title in Sekida (2005): Seppō’s Turtle-nosed Snake
- Named characters (in Pinyin):
- Xuefeng Yicun (822-908)
- Changqing Huileng (854-932)
- Xuansha
- Yunmen Wenyan (864-949)
- Named characters (in Wade-Giles):
- Hsueh Feng
- Ch’ang Ch’ing
- Hsuan Sha
- Yun Men.
- Named characters (in Japanese):
- Seppō
- Chōkei
- Gensha
- Ummon
- Other koan collections: The Book of Equanimity, Case #24.
- Historical commentaries:
- Chan Masters Miaozong, Baochi and Zukui (contained in Zen Echoes, Beata Grant, 2017)
- Hakuin Ekaku and Tenkei Denson (contained in Secrets of the Blue Cliff Record, Thomas Clearly, 2002)
- Modern commentaries:
- Matthew Juksan Sullivan (contained in The Garden of Flowers and Weeds, 2021)
- Gyomay Kubose (contained in Zen Koans, page 3, 1973)
- Gerry Shishin Wick (contained in The Book of Equanimity, 2005)
- Genjo Marinello (dharma talk contained in Plum Mountain News, 13.4)
- Stefano Mui Barragato (dharma talk)
- Dainin Katagiri (audio dharma talk)
- Kurt Spellmeyer (audio dharma talk 1 and 2)
- Henry Shukman (audio dharma talk)
- Ken Morgareidge (audio dharma talk)
- Bodhin Kjolhede (audio dharma talk)
- Yamada Kôun (dharma talk with paywall)
- Scholarly commentaries:
- Steven Heine (contained in Opening a Mountains, page 136, 2002)
- Steven Heine (contained in Chan Rhetoric of Uncertainty in the Blue Cliff Record, page 183, 2016)