What is the definition of a city?

A city is defined as a large human settlement.

It can be defined as a permanent, densely populated place with administrative boundaries, and its members are mainly engaged in non-agricultural tasks. Cities usually have extensive housing, transportation, health, public utilities, land use, commodity production and communication systems. Their density promotes the interaction among people, government organizations and enterprises, and sometimes benefits different aspects in this process, such as improving the efficiency of goods and services distribution.

The formation of the city:

The appearance of cities is a sign of human maturity and civilization, and it is also an advanced form of human social life. Fundamentally speaking, the origin of a city can be divided into two types: city for city and city for city. Changing cities into cities means that cities come into being before cities, and cities develop on the basis of cities. Such cities are more common in strategic locations and border cities, such as Tianjin, which originated in Tianjinwei.

"City" is a city formed by urban development, that is, there was a market before the city was formed. This kind of city is relatively common, which is the product of the development of human economy to a certain stage, and is essentially the trading center and gathering center of human beings. The formation of a city, no matter how complicated, is nothing more than these two forms.