The Tani people include the Adi, Apatani, Galo, Mising, Nyishi, and Tagin ethnic groups of India and China.As members of the Sino-Tibetan ethnic group, they speak various Tani languages and primarily reside in the Indian states of Arunachal Pradesh and Assam, as well as the Tibet Autonomous Region in China.[citation needed] Most of the residents of Arunachal Pradesh and Upper Assam belong to the six Tani tribes (Nyishi, Adi, Galo, Apatani, Tagin, and Mising) who are all said to be descended from Abotani.The festival lasts for about ten days and includes various activities such as animal sacrifices, distribution of rice beer, and performances of traditional dances like Ponung.Celebrated in early July, Dree is an agricultural festival where prayers are offered to deities to ensure a bountiful harvest and to protect crops from pests and diseases.