Zen lineage charts 南浦紹明 (1235–1308), who received transmission in China from the monk Xutang Zhiyu 虚堂智愚 (Japanese "Kido Chigu," 1185–1269) in 1265, who then returned to Japan in 1267. It was then spread by his student Shuho Myocho (second generation) and Kanzan Egen (third generation), who made it an influential school. The two main schools today are Takujū and Inzan, which both descent from Hakuin. Although it is difficult to trace when the West first became aware of Zen as a distinct form of Buddhism, the visit of Soyen Shaku, a Japanese Zen monk, to Chicago during the World Parliament of Religions in
Doctrinal background of Zen we conceive of is the result of the working of the five skandhas—results of perception, feeling, volition, and discrimination. The five skandhas together compose consciousness. The "things" we are conscious of are "mere concepts", not "Ding an sich". It took Chinese Buddhism several centuries to recognize that sunyata does not refer to "wu", "nothingness", nor does Buddhism postulate an undying soul. The influence of those various doctrinal and textual backgrounds is still discernible in Zen. Zen teachers still refer to Buddha-nature, but the Zen tradition also emphasizes that Buddha-nature "is" sunyata, the absence of an independent and substantial self. In