Katok Tsewang Norbu
Katok Tsewang Norbu' (Wylie: ka' thog tshe dbang nor bu, 1698–1755) was a teacher of the Nyingma school of Tibetan Buddhism) who notably championed the shentong (Wylie: gzhan stong) or "empty of other" view first popularised by the Jonang school as well as examining the Chan Buddhist teachings of Hashang Mahayana, known as Moheyan. Despite the shentong view being banned as heretical, he successfully taught and cultivated its teachings as a legitimate view among the Nyingmapa.
Katog Tsewang Norbu (1698-1755) was the head of Katog monastery, and ranks as one of the most impressive scholars of eighteenth-century Tibet. His studies took in both the texts of the Nyingma and those of the new schools; he exchanged Nyingma for Kagyü teachings with the Twelfth Karmapa, Jangchub Dorjé (1703-1732), and wrote a history of the transmission of Mahāmudrā. Tsewang Norbu studied and championed the forbidden Jonang doctrines, writing several works on the “empty of other” (gzhan stong) theory and on the Kālacakra tantra, the source of “empty of other” in the tantric corpus. He also wrote some non-religious works on history and geography and travelled widely, making several journeys to Nepal.
His interest in Chan, which was popularly understood as "defeated" as a teaching in Tibet at a famous debate and even has a Cham dance ridiculing Hashang Mahayana, may have been spurred by Gelug attacks on Nyingma teachings such as Dzogchen as well as against other "simultaneist" teachings of the Sarma schools such as Mahamudra.
After the suppression of the Jonang school, its scholars and its texts and the work of the Sakya scholar Serdok Penchen Sakya Chokden (Wylie: gser mdog pan chen sa kya mchog ldan, 1428–1507) by the 5th Dalai Lama and the Gelug religio-political establishment in the 17th century, shentong views were propagated mainly by Karma Kagyu and Nyingma lamas. In particular, Situ Panchen, the 8th Tai Situpa (1700–1774), and Katok Tsewang Norbu were very instrumental in reviving Shentong among their sects. Katok Tsewang Norbu was the Situ Panchen's teacher, but it was the latter who had a lasting effect on the larger Tibetan Buddhist community. "In the end it would be Situ more than anyone who would create the environment for the widespread acceptance of the Zhentong theories in the next century." This revival was continued by Jamgon Kongtrul, a 19th-century Rimé movement scholar and a forceful partisan of shentong. More recently, the Kagyu Lamas Kalu Rinpoche and Khenpo Tsultrim Gyamtso Rinpoche also taught the shentong view.
- van Schaik, Sam. "The Great Perfection and the Chinese Monk: Nyingmapa Defenses of Hashang Mahāyāna". http://earlytibet.com/. Retrieved 11 November 2014.
- Stearns, Cyrus (2003). The Buddha from Dolpo: A Study of the Life and Thought of the Tibetan Master Dolpopa Sherab Gyaltsen. Motilal Banarsidass Publ.,. p. 76. ISBN 81-208-1833-4.
- Rigpa Shedra (July 24, 2008). 'Katok Monastery'. Source:  (accessed: Sunday August 17, 2008)