The Caodong school was founded by Dongshan Liangjie and his Dharma-heir Caoshan Benji. Dongshan traced back his lineage to
Shitou Xiqian (700–790), a contemporary of
Mazu Daoyi (709–788). Sayings to the effect that Shitou and Mazu were the two great masters of their day date from decades after their respective deaths. Shítóu's retrospective prominence owes much to the importance of
Dongshan Liangjie. Shítóu does not appear to have been influential or famous during his lifetime: In the 11th century the Caodong-school nearly extinguished.
Dayang Jingxuan (942-1027), the last descendant of the Caodong-lineage passed on his dharma-transmission via Fushan Fayuan, a teacher from the
Linji school, to Fayuan's student
Touzi Yiqing (1032-1083), who was born five years after Jingxuan's death. During the
Northern Song (960–1127) the Caodong was not successful in the social elite. The
Linji school and
Yunmen school dominated Chán. It was Touzi Yiqing's student
Furong Daokai (1043–1118) who was a successful monastic, and revived the Caodong school. His dharma "grandson"
Hongzhi Zhengjue (1091–1157) became very successful among elite literati in the
Southern Song (1127–1279), when the Imperial Court decreased their influence on society, and Chán schools became dependent on elite literati for support. Under Hongzhi and Zhengzie Qingliao, the Caodong school was revived and became one of the major traditions of Song dynasty Chan. These Song era teachers taught a practiced termed "
silent illumination" or "serene reflection" (
Ch: 默照禅) which relied on the doctrine of inherent enlightenment and
buddha-nature. Since Buddha was seen as something already present in the mind, all that one needed to do was to let go of all striving and this was achieved by silently sitting in meditation. The success of the revived Caodong school drew opposition from
Linji school figures like
Dahui Zonggao, who promoted the
Hua Tou method of
koan practice, and attacked
silent illumination as
quietistic. In 1227
Dōgen Zenji, a former
Tendai student, studied Caodong Buddhism under
Tiantong Rujing, and returned to
Japan to establish the
Sōtō sect. His lineage incorporates not only the dharma-transmission via Fushan Fayuan, but also Linji dharma-transmissions via
Eisai and his student Myozen, a teacher of Dogen, and the Linji dharma-transmission of Dahui Zonggao via the
Nōnin school. ==Influence==