Songka
[ song-kah ]
/ ˈsɒŋˈkɑ /
noun
a river in SE Asia, flowing SE from SW China through Indochina to the Gulf of Tonkin. 500 miles (800 km) long.
Also
Yuan Jiang
[Chinese yyahn jyahng] /Chinese ˈyüɑn ˈdʒyɑŋ/.
Also called
Red River.