Maratika Chimey Takten Choling monastery belong to the Nyingmapa sect of the Tibetan Buddhism.
The Nyingma school, also called Nyingmapa, is the oldest of the four schools of Tibetan Buddhism. It was established in Tibet during the reign of the Emperor Trisong Detsen (742-797 CE), who brought the Tantric masters Shantarakshita and Padmasambhava to Tibet to teach and to found the first Buddhist monastery in Tibet.
Buddhism had been introduced to Tibet in 641 CE, when the Chinese Princess Wen Cheng became the bride of the Tibetan King Songtsen Gampo. The princess brought with her a statue of the Buddha, the first in Tibet, which today is enshrined in the Jokhang Temple in Lhasa.