The largest river in China is the Yangtze River: 1. The source of the Yangtze River

The Yangtze River originates from the Tanggula Mountains on the Qinghai-Tibet Plateau. The Yangtze River source area is mainly composed of the northern branch Chumar River system, the western branch Tuotuo River system, and the southern branch Dangqu River system. The southern source of the Yangtze River, Dangqu, is the longest, has the largest basin area, and the largest water volume among all the sources of the Yangtze River.

2. Provinces through which the main stream flows and provinces through which the tributaries flow

It flows from west to east, passing through 11 provinces (municipalities and autonomous regions) including Qinghai, Tibet, Yunnan, Sichuan, Chongqing, Hubei, Hunan, Jiangxi, Anhui, Jiangsu and Shanghai, and finally enters the East China Sea; its tributaries also flow through 8 provinces (autonomous regions) including Gansu, Shaanxi, Guizhou, Guangxi, Guangdong, Henan, Zhejiang and Fujian.

III. World ranking

The Yangtze River is about 6,300 km long and ranks third in the world among the world's major rivers, second only to the Nile River in Africa and the Amazon River in South America.

IV. The dividing points and famous sections of the upper, middle and lower reaches of the Yangtze River

The main stream of the Yangtze River above Yichang City is the upper reaches, and the main tributaries joining it are the Yalong River; the main tributaries joining it from Yibin to Yichang are the Minjiang River and Jialing River on the north bank and the Wujiang River on the south bank. The main tributaries joining this section are the Qingjiang River and the four rivers of Xiang, Zi, Yuanli in the Dongting Lake system and the five rivers of Gan, Fu, Xin, Xiu and Rao in the Poyang Lake system on the south bank, and the Hanjiang River on the north bank, with the most complex waterways. The lower reaches are from Hukou County to the estuary, and the main tributaries joining it are the Qingyi River, Shuiyang River system, Taihu Lake system on the south bank and Chaohu Lake system on the north bank.

The section from Dangqukou to the mouth of Bakuang River in Yushu County, Qinghai Province is called Tongtian River; the section from the mouth of Bakuang River to the mouth of Minjiang River in Yibin, Sichuan Province is called Jinsha River; the section from Minjiang River in Yibin, named after its gold production, to Wusongkou of the Yangtze River, of which Yibin to Yichang in Hubei Province is called Chuanjiang River, and the section from Zhijiang River in Hubei Province to Chenglingji in Hunan Province is called Jingjiang River. The Jingjiang River is divided into the upper and lower Jingjiang Rivers. The upper Jingjiang River: the entire section from Zhijiang River to Ouchikou; the lower Jingjiang River: the entire section from Ouchikou to Chenglingji in Hunan Province. The section below Jiangsu Province is also called Yangtze River.

V. Famous tributaries of the Yangtze River

The Yangtze River system is well developed and consists of thousands of tributaries of different sizes. The tributary with the largest drainage area is the Jialing River; the tributary with the largest annual runoff and annual average flow is the Minjiang River, and the tributary with the longest length is the Hanjiang River. The Huangpu River is the last tributary of the Yangtze River.

Six, famous poems about the Yangtze River

The Yangtze River flows eastward, and the waves wash away all heroes. (Yang Shen's "Linjiangxian·Rolling Yangtze River Flows East"); I miss you every day, but I can't see you, and we drink the water of the Yangtze River together. (Li Zhiyi's "Bosuanzi·I Live at the Head of the Yangtze River"); The great river flows eastward, and the waves wash away all the heroes of the ages. (Su Shi's "Nian Nujiao·Reminiscence of the Past at Chibi"); The boundless fallen leaves fall down, and the endless Yangtze River rolls in. (Du Fu's "Climbing the Heights"); I left Baidi in the morning among the colorful clouds, and returned to Jiangling a thousand miles away in one day. (Li Bai's "Early Departure from Baidi City/Baidi Going to Jiangling"); The gate of heaven is broken and the Chu River is opened, and the clear water flows eastward to this point. (Li Bai's "Looking at Tianmen Mountain"); The lone sail is far away and the blue sky ends, and only the Yangtze River is seen flowing across the sky. (Li Bai's "Farewell to Meng Haoran at the Yellow Crane Tower to Guangling") The mountains end with the plains, and the river flows into the wilderness. (Li Bai's "Farewell at Jingmen Crossing"); I don't know who the moon on the river is waiting for, but I can see the Yangtze River sending away the flowing water. (Zhang Ruoxu's "Spring River Moonlight Night").