How can the width be compared! The width of different river sections varies greatly. The Yangtze River is the longest river in Asia and China, with a total length of 6211.31 kilometers (measured in 2001). It originates from the Tanggula Mountains in the Qinghai-Tibet Plateau and is the third longest river in the world, second only to the Amazon River and the Nile River. The water volume is also the third in the world. The Xiangjiang River is one of the main tributaries of the Yangtze River. It originates from the western foot of the Haiyang Mountain in Xing'an County, Guangxi, flows northeast into the eastern part of Hunan Province, merges with the Xiaoshui River in Yongzhou City, flows eastward through Yongzhou, Hengyang, Zhuzhou, Xiangtan, Changsha, and flows into Dongting Lake in Xiangyin County before returning to the Yangtze River. The total length is 817 kilometers.