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Cao Lộc, Đồng Đăng site of the border crossing, Tân Thành, Xuân Long, Yên Trạch, Tân Liên, Gia Cát, Cống Sơn, Mẫu Sơn, Xuất Lễ, Cao Lâu, Hải Yến, Lộc Yên, Thanh Lòa, Hòa Cư, Hợp Thành, Thạch Đạn, Bảo Lâm, Thụy Hùng, Song Giáp, Phú Xá, Bình Trung, Hồng Phong.