Under the condition of underdeveloped communication in ancient times, how did China give orders to manage the country?

As an ancient local government agency, we can often see such scenes in some TV dramas. An official can mobilize a large number of troops, as if there are many troops in every county. Is this scene right? 、

This is obviously wrong. First, there couldn't have been so many people in ancient China. At that time, there were almost hundreds of thousands of people in a county town, and ordinary people came to 10 thousand people. Even so, a county is a county government, so how do they manage the whole county when transportation and communication are so backward?

In other words, the ancients had their own wisdom. Every county would be equipped with a county government, and villages or townships would have some government management agencies.

There are three bosses in the county government, namely, three products, seven products, eight products and nine products, which correspond to the magistrate, county magistrate and master book respectively. The magistrate of a county is naturally the boss of the whole county. In addition to these three leaders who don't work very hard, there are a large number of men who are responsible for copywriting records and daily affairs, and of course, the public security bureau chief. But even so, there are dozens of people in the whole county government, not exceeding 100.

In addition to the county government, there are some respectable squires or Bao Zheng in the village. If there is a dispute between villagers, they can also be judged. Of course, they also have the responsibility to supervise the villagers. If there is a peasant uprising in any place, officials in any place also have unshirkable responsibilities.