Pearl River Delta in the context of "Southern China"

A megalopolis (/ˌmɛɡəˈlɒpəlɪs/), also called a supercity or megaregion, is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. They are integrated enough that coordinating policy is valuable, although the constituent metropolises keep their individual identities. The megalopolis concept has become highly influential as it introduced a new, larger scale thinking about urban patterns and growth.

Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly romanized as Canton) and its surrounding Pearl River Delta. Although Cantonese specifically refers to the prestige variety in linguistics, the term is often used more broadly to describe the entire Yue subgroup of Chinese, including varieties such as Taishanese, which have limited mutual intelligibility with Cantonese.

Cantonese is viewed as a vital and inseparable part of the cultural identity for its native speakers across large swaths of southeastern China, Hong Kong, and Macau, as well as in overseas communities. In mainland China, it is the lingua franca of the province of Guangdong (being the majority language of the Pearl River Delta) and neighbouring areas such as Guangxi. It is also the dominant and co-official language of Hong Kong and Macau. Further, Cantonese is widely spoken among overseas Chinese in Southeast Asia (most notably in Vietnam and Malaysia, as well as in Singapore and Cambodia to a lesser extent) and the Western world. With about 80 million total speakers as of 2023, standard Cantonese is by far the most spoken variant of Yue Chinese and non-Mandarin Chinese language.

Zhuhai is a resort city located on the west bank of the Pearl River estuary, near Macau on the central coast of southern Guangdong, China, on the southeastern edge of the Pearl River Delta. Its name literally means "pearl sea", which originates from the city's location at the mouth of the Pearl River meeting the South China Sea. Zhuhai borders Jiangmen to the west, Zhongshan to the north and Macau to the southeast, and has a bridge connecting to Hong Kong.

Zhuhai was one of the original four Special Economic Zones established in 1980, as well as one of China's premier tourist destinations, being called the Chinese Riviera. While the city is located in the traditionally Cantonese-speaking province of Guangdong, a significant portion of the population is now made up of Mandarin-speaking economic migrants originally from inland provinces.

38°42′N 118°6′E / 38.700°N 118.100°E / 38.700; 118.100

The Jing-Jin-Ji cluster is an expanded urban agglomeration consisting of Beijing (Jing), Tianjin (Jin), and Hebei (Ji). It is the biggest urban agglomeration region in North China, including an economic region surrounding the municipalities of Beijing and Tianjin, and along the coast of the Bohai Sea. This emerging region is rising as a northern metropolitan region rivaling the Pearl River Delta in the south and the Yangtze River Delta in the east. In 2020, it had a total population of 110 million people, comparable to that of the Philippines.

Dongguan is a prefecture-level city in central Guangdong Province, China. An important industrial city in the Pearl River Delta, Dongguan borders the provincial capital of Guangzhou to the north, Huizhou to the northeast, Shenzhen to the south, and the Pearl River to the west. It is part of the Pearl River Delta built-up (or metro) area with more than 65.57 million inhabitants as of the 2020 census spread over nine municipalities across an area of 19,870 square kilometers (7,670 sq mi).

Dongguan's city administration is considered especially progressive in seeking foreign direct investment. Dongguan ranks behind only Shenzhen, Shanghai and Suzhou in exports among Chinese cities, with $65.54 billion in shipments. It is also home to one of the world's largest shopping malls, the New South China Mall, which is seeing increased activity. Although the city is geographically and thus culturally Cantonese in the Weitou form and as well as culturally Hakka in the prefectures of Fenggang and Qingxi, the majority of the modern-day population speaks Mandarin due to the large influx of economic migrants from other parts of China. The city is home to several universities, including Guangdong University of Science and Technology, Guangdong Medical University and Dongguan University of Technology.

38°42′N 118°6′E / 38.700°N 118.100°E / 38.700; 118.100

The Bohai Economic Rim (BER) or Bohai Bay Economic Rim (BBER) is the economic region surrounding Tianjin (Tientsin). It also includes areas in Hebei, Liaoning and Shandong surrounding the Bohai Sea. This region has undergone major economic and infrastructural changes and is an emerging economic powerhouse of North China, rivaling both the Pearl River Delta in southern China and the Yangtze River Delta in eastern China.

The Daxi culture (5000–3300 BC) was a Neolithic culture centered in the Three Gorges region around the middle Yangtze, China. The culture ranged from western Hubei to eastern Sichuan and the Pearl River Delta. The site at Daxi, located in the Qutang Gorge around Wushan, Chongqing, was discovered by Nels C. Nelson in the 1920s.

Kongsi (Chinese: 公司; Pe̍h-ōe-jī: kong-si; pinyin: gōngsī; Jyutping: gung1 si1) is a Hokkien transcription of a Chinese term meaning "company", especially businesses which have been incorporated. However, the word has other meanings under different historical contexts. Kongsi were most commonly known as Chinese social organizations or partnerships, but the term was also used for various Chinese institutions.

Amongst overseas Chinese, the word kongsi was applied to reference both clan organizations, whose members shared a common descent, and to district-dialect clubs, for Chinese immigrants originating from the same district speaking the same dialect. In the late 19th century, these district-dialect associations came to be known as wui gun (huiguan; traditional Chinese: 會館; simplified Chinese: 会馆; Jyutping: wuigun; pinyin: huìguǎn), especially in San Francisco, California where many Chinese from eight districts on the west side of the Pearl River Delta near the City of Canton went for the California gold rush.