Hong River

river in southwest China and northern Vietnam

thumb|right|18th century Tonkin Tonkin (), also spelled Tongkin, Tonquin or Tongking, is an exonym referring to the area surrounding the Red River Delta of Northern Vietnam. During the 17th and 18th centuries, this term referred to the domain of Đàng Ngoài, under the control of the Trịnh lords, encompassing both the Northern and Thanh–Nghệ regions, north of the Gianh River at the 17.7th parallel. From 1884 to early 1945, the term referred to the French protectorate of Tonkin, which comprised only the Northern region, approximately north of the 20th parallel.

region of Vietnam

river in China and northwestern Vietnam

bridge in Vietnam

bridge in Vietnam

river in Vietnam

species of fish

species of fish

bridge in Vietnam

bridge in Vietnam