Question: what is the great wall of vietnam?
Answer: The Long Wall of Quang Ngai (Vietnamese: Trường lũy Quảng Ngãi), Truong luy, or the Great Wall of Vietnam is a 127.4-kilometre (79.2 mi) rampart extending from Vietnam's Quảng Ngãi Province in the north to Binh Dinh Province in the south.