The Deng people, living in the dense forests of Zayu, Nyingchi, haven't been identified as an ethnic group by the State. They speak a language belonging to the Burmese branch of Sino-Tibetan language without written form. The costumes of Deng people are similar to those of the Dai people in Yunnan. Men wear a head cloth or bamboo hat, sleeveless robe and pants. Women wear short coat which only reach the chest and long skirts. The material is the flax woven by Deng women. Girls tie their hairs behind the head and wear silver headgear and huge round earrings or trumpet-shaped drumhead as well as necklace with strings of beads. Since it is very hot there, children often play naked. Little girls only tie a rope around their waist and hang a silver or copper spoon on the middle of the rope in front.
The Deng people are mainly distributed in the Equ, Zayu Qu, Gedo Qu and Doli Qu drainage areas in Lower Zayu Township, Zayu County. They number about 1,500, accounting for 1 percent of the total population in Tibet. They mainly go in for agriculture, planting paddy, corn and finger millet as well as such vegetable as cayenne, taro and legume and breeding livestock.