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Shenzhen City, abbreviated as "Shen", also known as Pengcheng, is a prefecture-level city, a sub-provincial city, a national planned city, and a megacity under the jurisdiction of Guangdong Province. It is a Chinese special economic zone approved by the State Council, a national innovative city, a modern marine city, an international comprehensive transportation hub city, a national economic center, a national advanced manufacturing base, a gateway to the outside world, an important carrier of an international science and technology innovation center, and a pilot demonstration zone of socialism with Chinese characteristics [1] [346-347]. It is located in the southern part of Guangdong Province, on the east bank of the Pearl River Estuary, bordering Daya Bay and Dapeng Bay to the east, the Pearl River Estuary and Lingdingyang to the west, the Hong Kong Special Administrative Region to the south, and Dongguan City and Huizhou City to the north [191]. By the end of 2024, the city will have 9 districts, a total area of ​​1,997.47 square kilometers, and a permanent population of 17.9895 million [378]. Shenzhen has a 7,000-year history of human activities and a 1,700-year history of city construction [326]. It is a comprehensive landform with hills as the main feature, and a combination of low mountains, hills, plateaus, terraces, and plains [323]. It has a subtropical monsoon climate, with long summers and short winters, mild weather, abundant sunshine, and abundant rainfall [324]. Shenzhen's predecessor was Bao'an County [236] [238] [285]. During the Ming and Qing dynasties, the main part of the city belonged to Xin'an County of Guangzhou Prefecture [234-235]. Before the establishment of the city, it belonged to Huiyang District [239]. The name Shenzhen first appeared in historical records in the eighth year of Yongle in the Ming Dynasty (1410). In March 1979, Bao'an County was renamed Shenzhen City, which was under the dual leadership of Guangdong Province and Huiyang District. In November, it was directly under the leadership of Guangdong Province. On August 26, 1980, Shenzhen established the Shenzhen Special Economic Zone [290] [376]. Shenzhen is one of the key overseas Chinese hometowns in Guangdong Province, one of the important old revolutionary bases, and one of the birthplaces of the Dongjiang Column during the Anti-Japanese War [327-328]; it is a window of China's reform and opening up and an emerging immigrant city, creating the world-renowned "Shenzhen Speed" and is known as the "Silicon Valley of China" [254]; it is also one of the four central cities in the Guangdong-Hong Kong-Macao Greater Bay Area, a national logistics hub, an international science and technology industry innovation center [2], and one of China's three national financial centers [3]. In 2024, Shenzhen's GDP will reach 3680.187 billion yuan, an increase of 5.8% over the previous year

Wuxi City, referred to as "Xi", is a prefecture-level city under the jurisdiction of Jiangsu Province. It is a Type I large city [139] and is located in the eastern part of China and the southern part of Jiangsu Province. It is adjacent to the Yangtze River in the north, Taihu Lake in the south, Suzhou City in the east, Changzhou City in the west, Huzhou City in Zhejiang Province and Xuancheng City in Anhui Province in the south and southwest. It is a city in the central area of ​​the Yangtze River Delta [6] and a member city of the Shanghai Metropolitan Area [140]. The Beijing-Hangzhou Grand Canal passes through the city, with a total area of ​​4,627.46 square kilometers [122]. The territory is mainly plains, with scattered low mountains and residual hills. It belongs to the northern subtropical humid monsoon climate zone. As of the end of 2023, the city has jurisdiction over 5 districts and administers 2 county-level cities; the city's permanent population is 7.495 million. [51] [105] Wuxi City is an important birthplace of Jiangnan civilization and Wu culture. Legend has it that it was named Wuxi because the tin mines in Xishan were exhausted. There are written records of this in the late Shang Dynasty. In the fifth year of Emperor Gaozu of the Western Han Dynasty (202 BC), Wuxi County was established and belonged to Kuaiji County. In the second year of Taikang of the Western Jin Dynasty (281 AD), it belonged to Piling County. Since the 16th year of the Republic of China (1927), it has been directly under the jurisdiction of Jiangsu Province. After Wuxi County was liberated on April 23, 1949, it was divided into Wuxi City and Wuxi County. In 1953, Jiangsu Province was established and Wuxi City became a provincial-level city. On March 1, 1983, the city-county system was implemented and Jiangyin, Yixing and Wuxi counties were placed under the jurisdiction of Wuxi City. [135] Wuxi City is an important central city in the Yangtze River Delta region approved by the State Council, a national historical and cultural city, a national comprehensive transportation hub city, a national advanced manufacturing base, a regional highland of scientific and technological innovation and a cultural and creative base, and a scenic tourist destination with lakeside landscape characteristics. [82] Wuxi City is the main birthplace of modern Chinese national industry and commerce, township enterprises, and the "Southern Jiangsu Model". It has landmark industries such as the Internet of Things, integrated circuits, and biomedicine. Wuxi has a strong cultural atmosphere and is the birthplace of historical celebrities such as Qian Zhongshu, Qin Bangxian, Rong Yiren, Abing, and Xu Beihong. [136] In 2024, Wuxi's GDP will reach 1,626.329 billion yuan, a year-on-year increase of 5.8% at constant prices.

Ningbo, abbreviated as "Yong", is a prefecture-level city, a sub-provincial city, and a state-planned city under the jurisdiction of Zhejiang Province [127]. It was formerly known as Siming and Mingzhou [234]. It is located in the northeastern coastal area of ​​Zhejiang Province [188]. The terrain is high in the southwest and low in the northeast. It is mainly plains and low mountains and hills. It has a subtropical monsoon climate [201]. As of the end of 2024, Ningbo has jurisdiction over 6 districts, 2 counties, and 2 county-level cities, with a total area of ​​9,816 square kilometers and a permanent population of 9.777 million [75] [229] [231]. Ningbo is a national historical and cultural city [1] and the cultural capital of East Asia. It has prospered because of its port since ancient times. It is the starting point of the "Maritime Silk Road" and one of the earliest cities in China to open ports [203]. It gave birth to the Siming School, Yangming School, and Zhejiang School. Ningbo Tianyi Pavilion is the oldest existing library in Asia [192] [236]. The Ningbo Gang is the largest business gang in modern China [198]. The number of Ningbo-born academicians ranks first in the country [195-196]. Ningbo's history can be traced back to the Hemudu culture 7,000 years ago. The Jingtoushan site pushes the history of Ningbo's humanities back to more than 8,000 years ago. In the first year of the Changqing period of the Tang Dynasty (821), the Mingzhou prefecture was moved to Sanjiangkou and a sub-city was built, marking the beginning of the construction of Ningbo. In the 14th year of the Hongwu period of the Ming Dynasty (1381), it was renamed Ningbo, which means "when the sea is calm, the waves are calm" [202]. Ningbo is an important central city in the Yangtze River Delta region, a modern marine city, a national comprehensive transportation hub, a national advanced manufacturing base, a regional science and technology innovation highland, a national shipping and logistics center, an important node city for the "Belt and Road" port and shipping cooperation [1], an important member of the Shanghai metropolitan area [131], the first National Civilized City [239], the first pilot demonstration city of Made in China 2025 [110], and has the world's third largest container port and the world's largest port in terms of cargo throughput, Ningbo-Zhoushan Port [205]. Ningbo has formed a modern industrial system dominated by digital industries, green petrochemicals, and high-end equipment, with new functional materials, new energy, key basic components, smart home appliances, fashion textiles and clothing, and modern health as its features, as well as a number of emerging and future industrial clusters with forward-looking layout [235]. In 2024, Ningbo's GDP will be 1,814.77 billion yuan, a year-on-year increase of 5.4%.

The Bund is an area in the center of Shanghai. It consists of a section of road along the Huangpu River and the buildings and facilities along the road. It is one of Shanghai's important landmarks. It is 1.5 kilometers long, starting from Yan'an East Road in the south and ending at Waibaidu Bridge over Suzhou River in the north. To the east is the Huangpu River, and to the west is the concentration of financial and foreign trade institutions in old Shanghai. There are more than 20 historical buildings of different styles along the Bund, including eclectic, Renaissance, and early modern styles, so it is known as the "International Architecture Expo". Since Shanghai was opened to the public, the Bund has become the financial and trade center of Shanghai and even China[1], and is also known as the "Wall Street of the East"[2].

China's largest autonomous region, with magnificent natural scenery and rich ethnic culture.

Special administrative region in southern China known for its gaming industry and Portuguese colonial architecture.

The eastern coastal province of China, the hometown of Confucius, has rich cultural heritage and natural resources.

The capital of China, with rich historical and cultural heritage and modern urban style.