Ho Chi Minh City is the largest city in Vietnam and the political, economic and cultural center of the Republic of Vietnam. It is located in the south of Vietnam, bordering the East Sea, and is one of the most important port cities in Vietnam.

Los Angeles is one of the important centers of industry, commerce, international trade, science and education, entertainment, and sports in the United States. It has Hollywood, the world film center, and is also one of the main bases for the US petrochemical, marine, aerospace, and electronics industries. Los Angeles also has California Institute of Technology and other world-renowned higher education institutions.

Kuala Lumpur is an international metropolis with great influence on Southeast Asia's culture, education, sports, finance, economy, commerce, and finance. Due to the fact that many international diplomatic conferences held in Southeast Asia are held in Kuala Lumpur and Singapore, Kuala Lumpur is also considered one of the two major centers of Southeast Asian diplomacy. Kuala Lumpur has also been named "World Book City 2020" by the UNESCO.

Jiangmen is one of the important gathering places of Guangfu people and one of the representative cities of Guangfu culture. In the Guangdong–Hong Kong–Macao Greater Bay Area, Jiangmen City is in the position of "connecting the east and opening the west". It is the hub gateway of the Greater Bay Area to the west and southwest of Guangdong, and "the new growth pole on the west bank of the the Pearl River and the river sea gateway on the coastal economic belt".

Shanghai, China is the general platform for various departments of the Shanghai Municipal People's Government to publish authoritative government information and provide online services on the Internet. It is also the main window for communication and communication between various departments of the Shanghai Municipal People's Government and sub websites of district and county governments with the public.

Shenzhen is located in the south of Guangdong Province, on the east bank of the the Pearl River Estuary. It is one of the four major central cities in the Guangdong–Hong Kong–Macao Greater Bay Area, a national logistics hub, an international comprehensive transportation hub, an international scientific and technological industry innovation center, and one of the three major national financial centers in China. It has made every effort to build a leading demonstration area of Socialism with Chinese characteristics, a comprehensive national science center, and a global marine center.

As a highly prosperous Free economic zone and an international metropolis, Hong Kong, together with New York and London, is called "Nylonkong". It is the world's third largest financial center, an important international trade and shipping center, and an international innovation and technology center. It is also one of the freest economies and most competitive cities in the world. It enjoys a high reputation in the world and is rated as the third tier city in the world by GaWC.