Rujing
Tiāntóng Rújìng (天童如淨; Japanese: Tendō Nyōjo) was a Caodong Buddhist monk living in Qìngdé Temple (慶徳寺; Japanese: Keitoku-ji) on Tiāntóng Mountain (天童山; Japanese: Tendouzan) in Yinzhou District, Ningbo. He taught and gave dharma transmission to Sōtō Zen founder Dōgen as well as early Sōtō monk Jakuen (寂円 Jìyuán).
Read more about Rujing.