The city is the main component of human civilization, and the city is also the development of human civilization and progress. In the agrarian age, man began to settle; With the development of industry and commerce, urban rise and urban civilization began to spread. In fact, in the agrarian age, the city appeared, but the role was military defense and sacrificial ceremony, not have the production function, just a consumption center. At that time the city was small, because the surrounding countryside provided little food. Each city and its controlled countryside constitute a small unit, relatively closed and self-sufficient.
The capacity of civil conduct includes two aspects, namely, the ability of person and the ability of property. Limited capacity for civil conduct in content, both in personal behavior ability and property behavior ability is restricted, such as mental patients, including only the personal behavior restricted and property behavior ability not restricted (as year full 18 one full year of life, have not reached the legal age of adults, their personal capacity does not enjoy the married), include only restricted property ability, and personal ability is not restricted, visible in content, with limited capacity for civil conduct is multifaceted, cannot simply be blunt.