In a slave society, the means of production belonged to the slave owner.

When Zhou Qingfeng first arrived in Hetuala, he heard Mao Ada's words, 'The fish in the water, the beasts in the mountains, and the birds in the forest are all masters'. He only thought it was too domineering before, but now he felt even more hateful. Because when he found that he had no food, he had no place to find a place to fish and hunt for food—all the places around Ekhkuren had a lord.

Before the industrial era, food was always the most valuable asset. The successive collapses of the Central Plains Dynasty were accompanied by the collapse of the food production system. Run around to other people's territory to get food, and wait for others to find you desperately.

When Abahai said that there was almost no food at home, Zhou Qingfeng found out that he was in trouble. If you make a living from medicine, there are a lot of patients in Ekhkulun, but only a few have enough ability to pay.

Ordinary slaves do not even have personal freedom, and they are treated in vain. Ordinary warriors are poor and need to be attached to Belle Bezi to survive. There are more than 100 Belle Shells in the city who can pay for the consultation, and the customer base is not large enough. Therefore, practicing medicine can only be urgent, and there is no way to get rich. On the one hand, Zhou Qingfeng asked Mr. Sun to introduce patients, and on the other hand, he had to find some ways to generate income.

In this case, .......

"Come, follow me, this is 'soil', t-u-tu." Zhou Qingfeng stood on a mound of dirt and shouted loudly.

The fifteen slaves below all had their heads tilted up, their eyes glazed over. They slurred their speech, and their voices made a 'dirty' sound.

"Damn, I haven't eaten enough, read it aloud to me." Soil', t-u-tu. Zhou Qingfeng continued to shout, "This is the soil you are collecting. How is it written? One horizontal, one vertical, and one long horizontal. Are you blind, hurry up and write it for Lao Tzu, and write it on your learning board. ”

Zhou Qingfeng's saliva was almost dry, but the slaves below were like wood, unresponsive, or even unresponsive. Abahai laughed on the side, and the angry Zhou Qingfeng scolded angrily: "Laugh and laugh, laugh at you ghost." It's hard to get started, don't you understand? I'm sure I'll be able to teach a few useful people. ”

After scolding Abahai, Zhou Qingfeng shouted to the slaves again: "Write the word 'soil' well, our work today is related to 'soil', digging soil." Dig the clay from the ground into the basket, and it will be up to you to eat or drink it dry. ”

In order to create an income-generating project, Zhou Qingfeng deliberately walked around the city of Ekhkulun to find a place where clay could be mined in the open pit. He had the slaves carry baskets and hoes to dig the clay and do some educational work along the way.

The learning tablet with the word 'soil' written on it hung on the back of each slave, and everyone could see it when they looked up and down. Zhou Qingfeng asked them to study while working. After digging up the clay and transporting it back to the courtyard of the city, he began to direct the slaves to build a small fire kiln. Learning the words on the clipboard becomes 'fire'.

"H-uo-huo, this is the 'fire' we usually use. I remember it, I learn five words every day, and if I don't learn well, I will be punished. If you learn well, I have a prize. Zhou Qingfeng's face was fierce, and the whip in his hand had already whipped several people. The slaves at the bottom were building the fire and burning the kiln, and at the same time labored to remember, because the little master did what he said.

If you don't care, you will whip it, and if you don't care about it, you will give salt and sugar water to drink. There are rewards and punishments, which is much better than the days when only punishment was not rewarded in the past. There is a contrast to be felt, and although the slaves are struggling with such a simple teaching, they are still forcing themselves to use their brains.

Abahai kept following, and asked very puzzled by Zhou Qingfeng's actions: "Zhou boy, what are you going to do?" ”

"I said it all, I want to make a fire kiln." Zhou Qingfeng replied. It didn't take much time to build a fire kiln with mud, and a dozen slaves worked together to complete it in one day. However, his fire kiln is still a bit complicated, with bellows, smoke pipes, and preheating pools that require some skill to complete. The appearance of the whole fire kiln is a little ugly, but the design of the internal combustion chamber is still very scientific.

In Ekhkulun, where metal tools are lacking, the saber of light in Zhou Qingfeng's hand is the best woodworking tool. Reality also forced him to teach himself to become a carpenter, such as making construction molds and foot-driven pottery turntables.

"What is this spinning thing for?" Abahai is like a curious child, interested in everything about Zhou Qingfeng.

"This is the potter's wheel, which is used to rotate the clay to make the shape of the pottery."

"Do you really want to burn pottery?"

"Didn't I tell you last night? There's no place around the city for us to hunt, so we'll have to do some handicrafts. Firing pottery is the easiest job and the fastest work. ”

"Are you going to get some pottery to sell? But there are slaves burning pottery in the city. ”

"They burned so badly. The firing temperature is low, the tire is loose, and some even fall apart when exposed to water. While speaking, Zhou Qingfeng also took out two pieces of paper from his pocket, on which the design drawings of the fire kiln were drawn, and there were some points and difficult marks.

"According to my information, it is also necessary to burn pottery at least 1,000 degrees Celsius. Those slaves in the city did not work actively, and the subordinate owners did not understand, the temperature of the flame could not reach it at all, and the finished products burned were not up to standard. And I can definitely do better. ”

After the kiln is built, a shed is also erected to shelter from the wind and rain, and the whole kiln body needs to be dried for several days before it can be used. So Zhou Qingfeng taught the slaves to use clay to make various pottery semi-finished products, such as cups, saucers, bowls and jars. These things are necessary containers for daily life, and such superficial things are either scarce or of poor quality in Ekhkulen.

Semi-finished products also need to be dried in the shade, fuel needs to be hoarded in large quantities, and slaves also need training, all of which are taught by Zhou Qingfeng. He himself used to belong to the mouthpiece party that had no hands-on ability, and now he has to do it himself. Fortunately, he is a technical school teacher, and there are many practical books and materials to study in the technical school library on the isolated island of time and space.

Cheap knowledge is the foundation of the success of every traverser. Otherwise, just relying on Zhou Qingfeng's own blind thinking, he must have made a lot of mistakes, such as the step of 'yin drying' will definitely be ignored by him, and the firing of pottery will naturally fail.

After tossing and turning several times, the first work Zhou Qingfeng made on the potter's wheel he made was a jar, an ugly thing. After discovering that he didn't seem to have the talent for it, he decisively let the slaves explore it on their own. But Abahai thought it was quite fun, and the cups and saucers made were still decent.

After a few days of drying in the shade to allow the moisture in the kiln and semi-finished pottery to escape, Zhou Qingfeng began to fire the fire. When smoke rose from the chimney, many of the people of the city came to see the excitement. No one could tell what this 'goat beckon' was up to, except that he had been playing in the mud with his slaves for days.

"The temperature of the flame can be judged by its color. Now who can tell me what color is in our fire kiln? ”

"Red, correct answer. Can anyone write the 'red' word for me? ”

"Hey, I taught you yesterday, and I forgot it today? Nobody knows? Want to be whipped, don't you? ”

"You fools, fifteen people are twelve wrong. Abahai, don't laugh anywhere, slap me in the palm of your hand if you're wrong. ”

"We're red flames now, crimson to be exact, and that's only seven hundred degrees. Not enough, not enough, bellows, bellows, pull me up. ”

"Look at the ......, look at the ......, the color of the flame has changed. Turns golden yellow, even golden white. Write me the word 'yellow' and 'white'. This was also taught yesterday, and I'm going to be very angry if anyone makes a mistake again. ”

It takes about 30 to 40 hours to fire the pottery, and the whole process is not allowed to break the fire, and even the temperature of the flame must be kept stable all the time. From the beginning of the slow heating, to the high temperature sintering, and then to the slow cooling, this requires someone to keep an eye in front of the kiln.

Just such a process of temperature control is the privacy of 'passing on men but not women' among craftsmen, which is often the experience of several generations, and is an extremely confidential secret. This kind of valuable knowledge Zhou Qingfeng is now taught openly, and he doesn't hide it privately - in fact, he can't hide his secrets, he can't wait for his subordinates to grow up faster.

Fifteen slaves and Abahai followed Zhou Qingfeng for two days, and a large amount of wood fuel was continuously thrown into the fire kiln to burn, and the raging fire became a rare scene in the city of Ehekulun at night. It has attracted a lot of attention.

Although Zhou Qingfeng had never fired pottery, he had a simple and easy-to-understand theoretical guide in his hands. He knows what to do when to do, what temperature the flame should be maintained, what key points to pay attention to throughout the firing, and when it will be successful. These are the summaries of human knowledge and experience over thousands of years, and they are also the rational research of future science.

In contrast, the Ekhkuren people did not have such conditions for firing their own pottery, and were completely in a state of blind exploration. Even the simplest pottery could not be solved by the slightest mistake.

Two days later, the flame was extinguished, and Zhou Qingfeng opened the kiln to observe. After two days of firing, the kiln itself becomes a piece of pottery, and the inside of it is still steaming. When the black jars were taken out, the slaves who had survived for two days widened their eyes. Even Abahai was intrigued.

"This is the big tank you made?" Abahai asked.

Due to the lack of wells, water had to be drawn to the river outside the city. If the container of water is small, it will have to consume manpower repeatedly. Zhou Qingfeng deliberately burned two large water tanks for water transportation and storage, which can greatly improve the efficiency of production and life. To put it more seriously, the precious calories obtained from food are not wasted walking back and forth, and can be used for more valuable labor.

It's such an inconspicuous water tank, and it's a treasure in Ekhkulen. Countless people in the city came to watch, climbing the wall of Zhou Qingfeng's house, and they were amazed.

"There are no cracks, no defects, and the overall sintering of the cylinder block is completed, which can be regarded as a success." After Zhou Qingfeng finished speaking, he was happy first-it's not easy. Others are engaged in steel, cement, glass, and muskets at every turn, but Lao Tzu is engaged in the lowest level of large water tanks.

It took several days of hard work to mobilize more than a dozen slaves to work together on such a large water tank, which contained a lot of scientific common sense, and the slightest error would be wasted. Technological progress is not an easy task.

As soon as Zhou Qingfeng said that he had succeeded, the slaves who accompanied him also let out bursts of cheers. The hard work of these days has allowed them to really learn something, and the labor process is also respected to a certain extent.

The news that the 'goat shellfish' could burn good pottery immediately spread throughout Ekhkulun, and even the head of the tribe, Ucha, hurriedly ran to see the excitement. Seeing two lightweight, sturdy and easy-to-use water tanks, Ucha immediately asked to buy ten. Other bellor beers also came to place orders.

However, when an endless stream of people came, they shouted 'goat beizi', and Zhou Qingfeng scolded angrily: "Shout 'goat' again, Lao Tzu is in a hurry with you!" ”