The way The "goal" Background Chinese texts Classical Post-classical Contemporary Zen in Japan Seon in Korea Thiền in Vietnam Western Zen The Shinji Shōbōgenzō (真字正法眼蔵) or True Dharma Eye 300 Cases (Shōbōgenzō Sambyakusoku), or Treasury of the True Dharma Eye (Mana Shōbōgenzō), compiled by Eihei Dōgen in 1223–1227, was first published in Japanese in 1766.
The literary sources of the Shinji Shōbōgenzō are believed to have been the Keitoku Dentōroku and the Shūmon Tōyōshū.
Regardless of a few instances where Dōgen criticized the study of kōans, legend states that the young monk stayed up all night copying the Blue Cliff Record before his journey China (although this story is likely apocryphal, given the great length of the text).
While establishing the Kōshōhōrin-ji, Dōgen gathered the three hundred kōans featured in the Shinji Shōbōgenzō.
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