The Sông Hồng, or Red River, is one of the major rivers in northern Vietnam. It flows approximately 1,200 kilometers, starting from Yunnan province in China and emptying into the Gulf of Tonkin. The river is known for its rich alluvial soil, which supports agriculture in the surrounding regions. The Sông Hồng has significant historical and cultural importance for the Vietnamese people. It has been a vital waterway for trade and transportation for centuries. The river also plays a crucial role in the ecosystem, supporting various wildlife and providing water for millions of people living along its banks.