Caodong school
The lineage that T'sao-shan began did not last beyond his immediate disciples. Yunju Daoying started a branch of Dongshan's lineage which lasted in China until the seventeenth century. Thirteen generations later, the Japanese Buddhist monk Dōgen Kigen (1200–1253) was educated in the traditions of Dongshan's Caodong school of Chan. Following his education, he returned to his homeland and started the Sōtō school ("Sōtō" is the Japanese reading of "Caodong").