The third Karmapa Lama, Rangjung Dorje, was a disciple of Nyingma Kumaradza. The latter taught Rangjung Dorje the nying-thig, "heart-essence," teachings transmitted by Padmasambhava (Khandro Nyingtik ) and Vimalamitra (Vima Nyingtik ). Therefore, Rangjung Dorje belongs to the nying-thig lineage of the Nyingma school. As a group, the Karmapa Lamas were among the earliest recognized Tulku, or lamas reincarnated as deities or lineage of deceased teachers. They were particularly influential at the Yuan and Ming courts of China.〔Suchan, Tom (1998). ''The Third Karmapa Lama, Rangjung Dorje (1284-1338)''. Source: () (accessed: January 29, 2008)〕

The first several Karmapas are distinguished by their important status at the Yuan and Ming courts of China where they served as the spiritual guides to princes and emperors. Their influence also extended to the court of the Tangut Xia Kingdom where a disciple of Dusum Khyenpa was given the title "Supreme Teacher" by a Tangut Xixia King..."〔Rhie, Marylin & Thurman, Robert (1991). ''Wisdom and Compassion''. New York: Harry N. Abrams. p.236.〕〔Suchan, Tom (1998). The Third Karmapa Lama, Rang Jung Dorje (T: Rang 'Byung rDo rJe). Source: () (accessed: January 29, 2008)〕