Yúnmén Wényǎn , , was a major Chinese Zen master in Tang-era China. He founded one of the five major schools of Chan , the "Yunmen School", after succeeding his famous master, Xuefeng Yicun , for whom he had served as a head monk. When founding his school, he taught at the Yunmen monastery of Shaozhou, from which he received his name. The Yunmen school flourished into the early Song Dynasty, with particular influence on the upper classes, and eventually culminating in the compilation and writing of the Blue Cliff Record. The school would eventually be absorbed by the Rinzai school later in the Song.