Traditionally, the Gate served as the exact border between Vietnam and China.[3][4][5] However, recently the Gate has been in Chinese control and well within Chinese territory,[6] in Pingxiang, Chongzuo County, Guangxi Autonomous Region,[7] since the early 1950s, and the official border between the two nations is beyond this Gate. The new border was later confirmed by Vietnam and Chinese communist officials by a border treaty enacted in June, 2000,[8] with Vietnamese officials stating that some Vietnamese territory along the Sino-Vietnamese border, namely in Cao Bằng Province and Lạng Sơn Province has been ceded to China.[9] This concession met with an uproar among the Vietnamese populace.[10] Nam Quan Gate served as the border maker and entry point to Vietnam between Vietnam & China, hence there's also a Vietnamese historical saying: "Nước Việt Nam ta trải dài từ Ải Nam Quan đến mũi Cà Mau"[11][12] (translated as "The Vietnamese nation stretches from Ải Nam Quan to Mũi Cà Mau (Cape Ca Mau)).