Kangan Giin was a disciple of Dōgen and the founder of the Higo school of Sōtō Zen Buddhism. It has been claimed that his father was Emperor Go-Toba or Emperor Juntoku. He did much evangelization work in Kyūshū, where he founded Daiji-ji (大慈寺) in Kumamoto. Before practicing with Dōgen, Giin started his Buddhist path as a Tendai monk. He later abandoned that school and became a member of Daruma School under Kakuzen Ekan. Along with his fellow students Tettsū Gikai and Gien, Giin became a student of Dōgen when Giin's teacher Ekan himself became a student of Dōgen. Dōgen died without giving dharma transmission to Giin, but he received it later from Dōgen's primary disciple, Koun Ejō.
A lineage in Buddhism is a line of transmission of the Buddhist teaching that is "theoretically traced back to the Buddha himself."
The acknowledgement of the transmission can be oral, or certified in documents.
Several branches of Buddhism, including Chan (including Zen and Seon) and Tibetan Buddhism maintain records of their historical teachers.
These records serve as a validation for the living exponents of the tradition.
In Chan and Zen Buddhism, dharma transmission is a custom .
Sōtō Zen or the Sōtō school is the largest of the three traditional sects of Zen in Japanese Buddhism.
It is the Japanese line of the Chinese Cáodòng school, which was founded during the Tang dynasty by Dòngshān Liánjiè.
It emphasizes Shikantaza, meditation with no objects, anchors, or content.
The meditator strives to be aware of the stream of thoughts, allowing them to arise and pass away without interference.
With about 14,000 temples, Sōtō .
According to tradition, Chan was introduced around 500 CE by Bodhidharma, an Indian monk teaching dhyāna.
Zen is deeply rooted in the teachings and doctrines of Mahāyāna Buddhism.
Mahayana Buddhism teaches śūnyatā, "emptiness", which is also emphasized by Zen.
But another important doctrine is the buddha-nature, the idea that all human beings have the possibility to awaken.
All living creatures are supposed to have the Buddha-nature, but don't realize this as long as they are not .