碧巌録
The teaching styles and words of the classical masters were recorded in the so-called "encounter dialogues". Snippets of these encounter dialogues were collected in texts as the "Blue Cliff Record" (1125) of Yuanwu, "The Gateless Gate" (1228) of Wumen, both of the Linji lineage, and the "Book of Equanimity" (1223) by Wansong Xingxiu of the Caodong lineage.