In which country are the Chao Phraya River, Chao Phraya River, Red River and Irrawaddy River?

Mekong River, with a total length of 4 180 km, is the most important transnational water system in Asia, the tenth largest river in the world and the seventh largest river in Asia. Its upstream is in China, called Lancang River, and its downstream delta is in Viet Nam. Because Vietnam has nine estuaries out of the South China Sea, it is called Jiulong River in Vietnam. Mekong River originates in Zaduo County, Yushu Tibetan Autonomous Prefecture, Qinghai Province, and flows through Yunnan Province, Laos, Myanmar, Thailand, Cambodia and Vietnam in China, and joins the South China Sea in Ho Chi Minh City, Vietnam.

The Chao Phraya River, which originated in the mountainous area in northern Thailand, flows to the flat area in the south, forming the Chao Phraya River Delta, and finally flows into Bangkok Bay, with a total length of 1352 km and a drainage area of170,000km2.

The Red River, a cross-border water system between China and Vietnam, is also the largest river in northern Vietnam. Because there are many red sand shale formations in the basin, the water is red, so it is called "Red River". The Red River flows northwest-southeast, with a total length of 1.280 km, 508 km in Vietnam and a drainage area of 75,700 square kilometers. China is 627 kilometers long with a drainage area of 76,276 square kilometers. In China, there is the main stream Red River (Yuanjiang) and its largest tributary Li Xianjiang (Ba Bian Jiang). Two rivers pass through the pool in Vietnam and then enter the South China Sea through the Beibu Gulf.

A big river in zhina Peninsula in Asia and the largest river in Myanmar. China was called Da Jinsha River and Lishui in ancient times. There are two tributaries at the source of this river, Enmeikaijiang in the east, which originates from the southern foot of Boshula Mountain in Chayu County, China (called Dulong River in Yunnan, China), and Mailikai River in the west, which originates from the mountainous area in northern Myanmar. The southeast of Dulong River flows through the west of Yunnan Gongshan Dulong Nu Autonomous County, then turns to the southwest, enters Myanmar, and flows south of Jiagang, which is called Enmei Kaijiang. These two rivers are located in Guidaohui, about 50 kilometers north of Myitkyina, and later called Irrawaddy River.