Mopin of the Galos, Solung of the Adis, Nyokum of the Nyishis: the festivals and languages on the state's own record
Background
The Government of Arunachal Pradesh describes the state as the Land of dawn-lit mountains. Its own profile of the state groups the communities broadly. One group follows the Lamaistic tradition of Mahayana Buddhism, with the Membas and Khambas culturally close to them, while the Khamptis and the Singphos of the eastern part follow the Hinayana sect. A second group takes in the Nyishis, the Apatanis, the Adis, the Mishmis, the Tagins, the Mijis, the Akas, the Sulungs (Puroik) and the Khowas; the Tani peoples among them, the Apatanis, the Nyishis, the Adis, the Galos and the Tagins, worship the Sun (Donyi) and the Moon (Polo). A third group comprises the Noctes, the Tangsas and the Wanchoos of Tirap and Changlang districts, known for their masculine dances and their art of woodcarving. The important festivals listed are Mopin of the Galos, Solung of the Adis, Losar of the Monpas, Dree of the Apatanis, Si-Donyi of the Tagins, Nyokum of Nyishis and Reh of the Idu Mishmis. On language, all the tribal languages of the state except Khampti belong to the Tibeto-Burman family, while the Khampti language belongs to the Tai group of the Chinese Siamese family; English is the official language of the state, and Hindi and Assamese serve as the lingua franca. The literacy rate on the same record, as per the 2011 Census, is 65.38%.
In plain words
Donyi-Polo — The worship of the Sun and the Moon followed by the Tani peoples of the state.
Tibeto-Burman — The language family to which almost all the tribal languages of the state belong.
Lingua franca — A common language used between people who do not share a mother tongue.