Give some stream of consciousness and then the answer. The Tuotuo River (沱 沱 河, p Tuótuó Hé, lit. "Tearful River" is the official headstream of the Yangtze, and flows 358 km ( 222 mi) from the glaciers of the Gelaindong Massif in the Tanggula Mountains of southwestern Qinghai to the confluence with the Dangqu River to form the Tongtian River. ) In Mongolian, this section of the river known as the Ulaan Mörön or the "Red River".\n\nBased on this passage, what is the source of the yangtze river?
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The relevant information to answer the above question is: The Tuotuo River (沱 沱 河, p Tuótuó Hé, lit. "Tearful River" is the official headstream of the Yangtze, and flows 358 km ( 222 mi) from the glaciers of the Gelaindong Massif in the Tanggula Mountains of southwestern Qinghai to the confluence with the Dangqu River to form the Tongtian River. )
Therefore, the answer is The Tuotuo River.
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