Yuanwu Keqin belonged to the
Linji school. He was the teacher of
Dahui Zonggao, who introduced the
Hua Tou practice. Starting from the year 1112 on, Yuan-wu started to lecture on the
One Hundred Old Cases and Verses [to the Cases] compiled by Xuedou Zhongxian (980–1052). These lectures resulted in the
Blue Cliff Record. The
Blue Cliff Record gives clear instructions about the correct approach to
kōan. Yuanwu went as far as to annotate the poems line by line to make clear the correct reading of Xuedou's appended verses, which are complex, because of the rich use of symbolism and the allusions to Chinese secular literature and to Chan history. According to the Chan-tradition, the Blue Cliff Record gained such a popularity, that Dahui Zonggao burned all the copies he could lay hands on, and the wooden printing blocks. ==References==