Located in a canyon with a depth of 3,800 meters (12,467 feet) and surrounded by the Tibetan Plateau in the north, the Gaoligong Mountain in the east, and the Dandanglika Mountain in the west, the inhabited area of the Dulong ethnic minority was isolated.Before the foundation of modern China, the productivity of the Dulong ethnic minority was as low as that of a patrilineal clanship.