The "Terchen Drupchen" is a Tibetan Buddhist religious festival and practice that is closely associated with the Nyingma tradition, one of the oldest schools of Tibetan Buddhism. This festival is characterized by its esoteric and highly ritualistic nature, and it is centred around the teachings and practices related to the Terma tradition. The Terma tradition is a distinctive aspect of Tibetan Buddhism, where texts, teachings, and sacred objects are believed to have been concealed by revered Buddhist masters in the past and subsequently revealed by tertöns (treasure revealers) at an appropriate time. These hidden treasures often contain teachings, rituals, and practices that are considered exceptionally potent for spiritual development and enlightenment.