In ancient cities, how to deal with feces?

In ancient cities, there were special people to deal with these excreta. They push some dung carts every day and take them to some dung factories for centralized treatment. Some excreta are sold to farmers after drying, because these excreta raw materials are good chemical fertilizer products, which can effectively help farmers increase the yield of crops. Although these people dig dung every day, their wages are very high. After all, they work hard every day, and many people are willing to pay them for working in such a smelly environment. However, in the traditional society of our country, these dung diggers are generally overbearing, generally under the control of some gangs, and people without connections can't even dig dung. This is really a good joke.

In our eyes, manure is dirty and filthy, but it can be well used in rural areas, because it can be watered in the fields to make the fertilizer for crops more fertile, and at the same time, it can make the quality of the land more fertile and the crops in the fields grow better, but the situation in cities is completely different, because people in cities don't need these manure. But people in the city need to deal with these excreta, so a new industry has been formed, called dung digging.

Because this name is not very pleasant to hear, in ancient times, these dung diggers were usually called honey pickers, saying that they made outstanding contributions to the development of human society every day, just like hardworking bees. However, in this case, there is a monopoly phenomenon. For example, in Shanghai during the Republic of China, the dung digging industry in Shanghai was controlled by the gangster Huang, and Huang's men sent a large number of dung trucks to dig dung in these dung pits every day. Although the working environment stinks, the profits are considerable, which makes Huang get along well in Shanghai.

To sum up, these excrement are generally dug up by people who are preparing for the excrement digging industry. Some excrement can be used as fertilizer, and you can get generous treatment in the process of excrement digging, but this industry is not complete until modern society gradually forms a complete system.