The majority is formed of Bhutias (Tibetan and Bhutnese in origin) and aboriginal Lepchas, who are mainly pastoral nomads. The Sikkimese predominantly practice Hinduism, but the former Chogyal House (“King under the religious laws”) and the official class are Buddhist. Sikkim is known for its Buddhist monasteries. Tibeto-Burmese languages and dialects are commonly spoken. Sikkim is bordered by the Tibet autonomous region of China to north