Yangtze in the context of "Chongming District"

The Song dynasty (/sʊŋ/ SUUNG) was a unifying imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Ten Kingdoms, ending the Five Dynasties and Ten Kingdoms period. The Song often came into conflict with the contemporaneous Liao, Western Xia and Jin dynasties in northern China. After retreating to southern China following attacks by the Jin dynasty, the Song was eventually conquered by the Mongol-led Yuan dynasty.

The dynasty's history is divided into two periods: during the Northern Song (北宋; 960–1127), the capital was in the northern city of Bianjing (now Kaifeng) and the dynasty controlled most of what is now East China. The Southern Song (南宋; 1127–1279) comprise the period following the loss of control over the northern half of Song territory to the Jurchen-led Jin dynasty in the Jin–Song wars. At that time, the Song court retreated south of the Yangtze and established its capital at Lin'an (now Hangzhou). Although the Song dynasty had lost control of the traditional Chinese heartlands around the Yellow River, the Southern Song Empire contained a large population and productive agricultural land, sustaining a robust economy. In 1234, the Jin dynasty was conquered by the Mongols, who took control of northern China, maintaining uneasy relations with the Southern Song. Möngke Khan, the fourth Great Khan of the Mongol Empire, died in 1259 while besieging the mountain castle Diaoyucheng in Chongqing. His younger brother Kublai Khan was proclaimed the new Great Khan and in 1271 founded the Yuan dynasty. After two decades of sporadic warfare, Kublai Khan's armies conquered the Song dynasty in 1279 after defeating the Southern Song in the Battle of Yamen, and reunited China under the Yuan dynasty.

Yangtze civilization (simplified Chinese: 长江文明; traditional Chinese: 長江文明) is a generic name for various ancient Neolithic and Bronze Age cultures from the Yangtze basin in China, a contemporary civilization by the neighboring Yellow River civilization.

The 4.2-kiloyear event (also known as the 4.2 ka event) was an aridification event (long-term drought), 4,200 years ago (4,200 years BP). It was one of the most severe climatic events of the Holocene epoch. It defines the beginning of the current Meghalayan age in the Holocene epoch.

Starting around 2200 BC, it most likely lasted the entire 22nd century BC. It has been hypothesised to have caused the collapse of the Old Kingdom in Egypt, the Akkadian Empire in Mesopotamia, and the Liangzhu culture in the lower Yangtze River area. The drought may also have initiated the collapse of the Indus Valley Civilization, with some of its population moving southeast to follow the movement of their desired habitat, as well as the migration of Indo-European-speaking people into India. Some scientists disagree with that conclusion, citing evidence that the event was not a global drought and did not happen in a clear timeline.

Wuxi (Chinese: 无锡; pinyin: Wúxī, WOO-shee) is a city in southern Jiangsu, China. As of 2024, it had a population of 7,495,000. The city lies in the southern Yangtze delta and borders Lake Tai. Notable landmarks include Lihu Park, the Mt. Lingshan Grand Buddha Scenic Area and its 88-meter (289 ft)-tall Grand Buddha at Ling Shan statue, Xihui Park, Wuxi Zoo, and the Wuxi Museum. Transportation options include Wuxi Shuofang Airport, Wuxi Metro, Shanghai–Nanjing intercity high-speed railway, and Beijing–Shanghai high-speed railway. Wuxi is home to Jiangnan University.

Jiangsu is a coastal province in East China. It is one of the leading provinces in finance, education, technology, and tourism, with its capital in Nanjing. Jiangsu is the third smallest, but the fourth most populous, with a population of 84.75 million, and the most densely populated of the 22 provinces of the People's Republic of China. Jiangsu has the highest GDP per capita and second-highest GDP of Chinese provinces, after Guangdong. Jiangsu borders Shandong in the north, Anhui to the west, and Zhejiang and Shanghai to the south. Jiangsu has a coastline of over 1,000 kilometers (620 mi) along the Yellow Sea, and the Yangtze flows through the southern part of the province.

Since the Sui and Tang dynasties, Jiangsu has been a national economic and commercial center, partly due to the construction of the Grand Canal. Cities such as Nanjing, Suzhou, Wuxi, Changzhou, and Shanghai (separated from Jiangsu in 1927) are all major Chinese economic hubs. Since the initiation of economic reforms in 1990, Jiangsu has become a focal point for economic development. It is widely regarded as one of China's most developed provinces, when measured by its Human Development Index (HDI). Its 2021 nominal GDP per capita reached CN¥137,300 (US$21,287), becoming the first province in China to reach the $20,000 mark.

Jiangxi is an inland province in east China. Spanning from the banks of the Yangtze river in the north into hillier areas in the south and east, it borders Anhui to the north, Zhejiang to the northeast, Fujian to the east, Guangdong to the south, Hunan to the west, and Hubei to the northwest. Major cities include its capital Nanchang, Ganzhou, and Jiujiang.

After the 1911 Revolution ended the Qing dynasty, Jiangxi became one of the earliest bases for the Chinese Communist Party. The Nanchang uprising took place in Jiangxi on 1 August 1927, beginning the Chinese Civil War. In 1931, the Chinese Soviet Republic's government was established in Ruijin, which is sometimes called the "Former Red Capital".

The Bayan Har Mountains, formerly known as the Bayen-káras or Bayan-Kara-Ula, are a mountain range in Qinghai Province, northwest China. The name is Mongolian for "Rich and Black". It can be viewed as one of the branches of the Kunlun Mountains. It separates the drainage areas of both the Yellow and the Yangtze rivers. The source of the Yellow River is the Yueguzonglie Basin (Gyaring-Ngoring Lakes), which is located in the northern part of the range.

The Dangqu, Dam Qu (Chinese: 当曲, p Dāngqū) or Dam Chu (Tibetan: འདམ་ཆུ, w 'Dam Chu, lit. "Marshy River") is the longest source of the Yangtze River, with a total length of 365.7 km (227.2 mi) located in the Qinghai province of the People's Republic of China. It runs from its source in an eastern offshoot of the Tanggula Mountains (唐古拉山), receives its main tributary the Buqu-Gar Qu River (布曲), and has a confluence with the Ulan Moron, where the Tongtian River is formed. The Dangqu has been discovered to be the actual and the longest headwater of the Yangtze River under modern criteria, although the nearby Ulan Moron or Tuotuo was traditionally regarded as the primary river of the two.