Shanghai is situated on the bank of the Yangtze River Delta, with East River in the east and Hangzhou delta in the south. Housing a population of over 18 million (and over 5.8 million migrants), it was once a small town supported by fishing and weaving before the first Opium War. Late in 1990, the central government started developing the area, and has since became the well-known booming metropolis city, and an attractive spot for tourists worldwide.

It's the capital of the most populous country in the world, China. It was also the seat of the Ming and Qing dynasty emperors until the formation of a republic in 1911. As such it is rich in historical sites and important government institutions. lies in the north of the North China Plain; beijing neighbors the Tianjin Municipality in the east, and borders Hebei Province on three sides-the north, west and south. The terrain of the Beijing area slopes from the northwest to the southeast. Mountains snake round the city's north, west and northeast, while the southeast part of the city is a plain that slopes gently toward the coast of the Bohai Sea. The Yongding, Chaobai and Juma Rivers and the north section of the Grand Cannel crisscross the area under Beijing's jurisdiction. Most of the rivers originate from mountainous areas in the northwest, cut through mountains and zigzag through the plain in the southeast before emptying into Bohai Sea.

Chongqing is a port city with the largest municipal area and population in China. It is situated in the upper reaches of the Yangtze River at the confluence of the Yangtze and Jialing Rivers in southwest China. With an area of 82,400 square kilometers (31, 800 square miles), Chongqing shares borders with the provinces of Hubei, Hunan, Guizhou, Sichuan, and Shaanxi. Besides the Han who form the majority of its total population of 30.9 million, numerous ethnic groups reside in Chongqing, including Yi, Tibetan, Miao, Qiang, You and Tujia.

Guangzhou is located in the southeast of Guangdong Province and in the north of the Pearl River Delta. Zhujiang (The Pearl River), the third largest river of China, runs through Guangzhou and is navigable to the South China Sea. Guangzhou is bordering on the South China Sea, adjacent to Hong Kong and Macao. It is a regional central city in South China, and China's Southern Gateway to the world. Guangzhou was formerly known as Canton to the western world.

Tianjin is at the northern end of the Grand Canal of China, which connects with the Huang He and Yangtze rivers, lies in the northeast of the North China Plain, west of the Pacific Ocean, at the lower reaches of Haihe River valley, with Bohai Sea on its east and Yanshan Mountain on its north. It is only 137 kilometers south east of Beijing, the capital of China.