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This article is about Tung-shan Liang-chieh, the 9th century Zen teacher. For information on Tung-shan Shou-ch'u (Tozan Shoshu), see
Dongshan Shouchu. For information on the hill in Hong Kong, see
Tung Shan (mountain).
Tung-shan Liang-chieh (Chinese: 洞山良价; pinyin: Dòngshān Liángjiè; Japanese: Tōzan Ryōkai) (806-869) was an ancient Chinese Ch'an (Zen, Jap.) master who is the credited founder of the Tsao-tung Cha'n lineage, also known as Soto Zen which was brought to Japan by Dogen Zenji. He was the dharma successor of Ungan Donjo (781? - 841). He is said to have attained enlightenment when, wading a river, he glimpsed his reflection in the water. He appears in Case 43 of the Blue Cliff Record. He is the author of the Verses of the Five Ranks.