Yuquan Shenxiu
Yuquan Shenxiu (Chinese: 玉泉神秀; pinyin: Yùquán Shénxiù; Wade–Giles: Yü-ch'üan Shen-hsiu, 606? –706) was one of the most influential Chan masters of his day, a Patriarch of the East Mountain Teaching of Chan Buddhism. Shenxiu was Dharma heir of Daman Hongren (601–674), honoured by Wu Zetian (r.