Chetsun Sengge Wangchuk (lce btsun seng ge dbang phyug) was born into the prominent Che (lce) clan U, the son of Che Tupai Wangpo (lce mthus pa'i dbang po) of Nyangro Nyentso. He was the main disciple of the early Nyingtik master Dangma Lhungyel (ldang ma lhun rgyal), who as caretaker of the Zha Lhakhang (zhwa lha khang) discovered the seventeen tantras of the Nyingtik, or Men-ngak class that Nyang Tingdzin Zangpo (myang ting 'dzin bzang po) is said to have hid there in the early ninth century. Receiving the Dangma’s complete translation, Chetsun systematized the Nyingtik teachings and spent the rest of his life in retreat.
Some time after receiving Dangma’s transmission Chetsun went to see his teacher intending to offer him a great deal of family wealth. Learning that Dangma had passed away, Chetsun gave the gifts to a monastic community in Nyetang (snye thang), giving teachings there to Nyang Kadampa of Meldro (mal dro nyang bka' dams pa).
Chetsun is said to have received teachings from Vimalamitra during a two-week long visionary experience while in retreat at Chimpu (mchims phu), urged on to practice there by a prophecy received from a wandering yogin who claimed to be Vimalamitra himself.
Chetsun concealed the Nyingtik teachings he received from Dangma in three locations: Langdro Chepa Takdra (lang gro'i chad pa ltag 'gra), Uyuk (u yug), and Jelgiyipuk (jal gyi phug), all in U. Shangpa Repa (shang pa ras pa) revealed the treasures hidden at Langdro; Shang Tashi Dorje (shang bkra shis rdo rje) discovered those at Uyuk in 1117, as well as those at Jelgyiuk.
According to tradition, when Chetsun Sengge Wangchuk was one hundred and twenty-five years old, he met Zhangton Tashi Dorje (zhang ston bkra shi rdo rje, 1097-1167), to whom he entrusted the teachings of his lineage. After this, he dissolved his body into rainbow light at the cave of Uyuk.
His teachings were continued in the oral lineage of the Bima Nyingtik. Moreover, in the nineteenth century Jamyang Khyentse Wangpo ('jam dbyangs mkhyen brtse' dbang po, 1813-1892), who was regarded as a reincarnation of Chetsun, revealed as treasure a teaching cycle known as the Chetsun Nyingtik (lce btsun snying tig), The Heart Essence of Chetsun, which constitutes the main Dzogchen teaching of Khyentse Wangpo.
Bibliography
Nyoshul Khenpo. 2002A Marvelous Garland of Rare Gems. Richard Barron, trans. Junction City, California: Padma Publication, p. 85.
Dudjom Rinpoche. 2002.The Nyingma School of Tibetan Buddhism. Gyurme Dorje and Matthew Kapstein, trans. Boston: Wisdom, p. 557 ff.
Roerich, George, trans. 1996.The Blue Annals. 2nd ed. Delhi: Motilal Banarsidas, p 192 ff.
Karmay Samten. 1998.The Great Perfection. Leiden: Brill, p. 210.
Zhang ston bkra shis rdo rje. 1985.Rdzogs pa chen po snying thig gi lo rgyus chen mo. InRnying ma bka' ma rgyas pa. Kalimpong: Dupjung Lama. Vol. 45, pp. 503‑675. Biography begins on page 648.