江源 jiāngyuán river source Origin Definitions Defs Strokes Stroke Words Sentences Sents 江源区 jiāngyuánqū Jiangyuan District Jiangyuan district in Baishan city, Jilin Province三江源 sānjiāngyuán Sanjiangyuan Sanjiangyuan National Nature Reserve; a high plateau region in Qinghai containing the headwaters of the Yangtze River, the Yellow River, and the Mekong River