Vice President Nguyen Thi Doan attended the event and beat the drum to officially open the festival.
The two-day festival features incense offerings, a palanquin procession, folk dances and folk games including wrestling, chess and swimming competitions.
The Quynh Phu district People’s Committee also held a ceremony on the same day to receive a certificate recognising A Sao temple as a National Historical and Cultural Site.
Covering nearly 32 hectares, A Sao temple is historically associated with the Tran dynasty (1225-1400) and the country’s three victorious wars against the mighty Mongolian empire in 1258, 1285 and 1288. Grand Lord Tran Hung Dao (1228 -1300) entered the pages of Vietnamese history as a triumphant leader in the struggle against the Mongol invaders.