Extended data:
Hukou is a general term for hukou and population. Take home as the household and the people as the mouth. The carrier of household registration is the household registration book, which is a legal document made by the household administration department of public security organs to record and retain the basic information of the registered population.
The household registration system in China can be traced back to the Spring and Autumn Period and the Warring States Period more than 2,000 years ago. At that time, all countries were at war, and population became the most important resource, and there was no one. Taxes, labor and soldiers all come from the population. After entering the information age, people's free activities are more extensive and their contacts are more frequent. The basic information of registered population provided by household registration management has increasingly become an indispensable information base for people's production and life, social service management and national administration and justice. Household registration management has also become the most important public information management system in modern society, and its restrictive and even repressive functions will be completely weakened, while its coordination and service functions will be continuously enhanced. Therefore, in the future society, household registration management will not be weakened, let alone "cancelled", but will be scientifically and steadily strengthened according to law, providing more convenient and efficient services for public life, group production, social services, government administration and other state actions, and playing its due role in a more extensive, diverse and sustained way.
Under the auspices of Shang Yang, Qin took the lead in establishing a strict household registration system. "Within the four borders, the couple are famous, the living write, and the dead cut." It also prohibits people from moving freely, "abolishes anti-behavior" and "deprives people of the right to move freely". If you want to go out and stay in a hotel, you must have an official letter of introduction, otherwise the guests will be punished together with the store. By establishing a strict household registration system, Qin gained a strong fiscal and tax absorption ability and national mobilization ability, and won the battle for hegemony. At the end of the Qin Dynasty, Liu Bang's army invaded Xianyang, and the generals were busy grabbing gold and silver treasures and beautiful women. Xiao He first seized the household registration files of the Qin Dynasty, which reflected his extraordinary political foresight. Later, "Hanwang (Liu Bang) knows the world, the number of households, the strength and weakness, and the sufferings of the people. Why did (Xiao) win Qin Shu?"