Itanagar, Aug 22 (ANI): The beginning of the day at Govt. Sr. Secondary School Arunodaya in Itanagar! After the National Anthem, the students get busy in learning Hindi, the favorite subject for many. Bordering China, Arunachal Pradesh has more than 26 major tribes and over 100 sub-tribes, many of whom among those love to learn and communicate in the National language. The popularity of Hindi runs high among the young generation. Hindi gained popularity in the region during the deployment of Army in early 1960s. As the soldiers did not have porters during the war, they took the help of tribal villagers to carry food and ammunition. Soon, the tribal started picking up Hindi from them. At present, Hindi has become the lingua-franca of several Arunachal tribes.