Thao River ( vi, sông Thao) is the upper stretch of the Red River, originates from

Weishan Yi and Hui Autonomous County Weishan Yi and Hui Autonomous County (; Xiao'erjing: ) is an autonomous county in the Dali Bai Autonomous Prefecture, in the west-central part of Yunnan Province, China. It was known as Menghua () until the 1950s. Geography It is situated in the ...

, Yunnan Province, China, flows through three Vietnamese provinces, including

Lao Cai Province __NOTOC__ Lao may refer to: Laos * Something of, from, or related to Laos, a country in Southeast Asia * Lao people (people from Laos, or of Lao descent) * The Lao language * Lao script, the writing system used to write the Lao language ** Lao (U ...

Yen Bai Province The is the official currency of Japan. It is the third-most traded currency in the foreign exchange market, after the United States dollar (US$) and the euro. It is also widely used as a third reserve currency after the US dollar and the e ...

and

Phu Tho Province Phu or ''variation'', may refer to: Places *Phủ, prefecture in 15th–19th century Vietnam People Given name *Phu Dorjee (died 1987), first Indian to climb Mount Everest without oxygen *Phu Dorjee Sherpa (died 1969), first Nepali to climb Mount ...

. Thao River merges with Black River and Lo River at Viet Tri City, Phu Tho Province, Vietnam. The river in China is called Yuan River ( zh, 元江; vi, Nguyên Giang). The river is known for Song Thao Campaign by Viet Minh in 1949, during the

First Indochina War The First Indochina War (generally known as the Indochina War in France, and as the Anti-French Resistance War in Vietnam) began in French Indochina from 19 December 1946 to 20 July 1954 between France and Việt Minh ( Democratic Republic of ...

. The campaign started on 19 May and ended on 18 July, with the victory of Viet Minh over the French.

References

Rivers of Phú Thọ province Rivers of Yunnan Geography of Dali Bai Autonomous Prefecture Geography of Pu'er Rivers of Vietnam {{China-river-stub