Yunju Daoying

Amongst modern Caodong/Sōtō practitioners, Tongan Daopi is commonly regarded as Yunju's successor through whom the Caodong teaching descended. This view comes from Huihong's Sengbao zhuan, which was completed in 1119, long after Yunju's life. Contemporary information, however, disagrees with this version of history. The Zutang ji (Patriarch's Hall Record), which was completed in 952, covers the life of Yunju Daoying, but does not mention Tongan Daopi as his disciple. The Zutang ji does, however, record someone with the name Tongan asking a question to Yunju Daoying. The scholar Ui Hakuju has written this could likely refer to Tongan Daopi. However, in the Transmission of the Lamp, which was compiled around 1004, Tongan Daopi is mentioned as a student of Yunju.