"Today I taught you addition and subtraction. Yesterday you learned to count. You know that one plus two is equal to three, and two plus three is equal to three.

When you have one stone, adding another stone to it naturally equals two stones. When you have two stones, adding one more stone naturally equals three stones. This is addition.

So when you have three stones, how can you make it equal to seven stones?

Oh, yes, add four more stones, then you have seven stones. If you don’t know how, you can add them now and count the stones. Is that right? "

Wang Zheng waited for them to play the stone adding game for a while, until they almost understood what addition was, and then he said:

"On the other hand, when you have three stones, how can you make them equal to two stones?

Yes, just throw away a stone. This thrown away stone can actually be said to be subtraction. What we are going to learn next is this method of addition and subtraction.

It took Ning half a month to learn such simple addition and subtraction, and I may not understand it as thoroughly as these children. I used to think that I was dull, but today I found out that it was my teacher who misled me. "

The correct version of this content can be found on 6/9*Shu.ba%! 【6*9*S*H*UBA.CX】

Wang Zheng looked at Chen Fengning strangely and said with a smile: "You should know that I didn't enroll in school."

The old blacksmith nodded and took Wang Zheng to the inner room.

Several rows of houses were built on the west side near the bamboo forest. When the doors are opened in the morning, the morning sun can be welcomed to ensure sufficient light, while in the afternoon the bamboo forest will provide shade and it won't be too hot.

In front of Wang Zheng was a large iron barrel that was three meters high and one meter in diameter.

The blacksmith recruited ten apprentices in succession and provided Wang Zheng with a steady supply of two-tooth hoes. They worked overtime every day. Butcher Lin has now asked Cheng Bokang to help transport the pork by boat.

Wang Zheng sat on it and tried it out, and it felt pretty good.

Wang Zheng planted cotton and watermelon seeds, totaling about ten acres.

It took several people to carry the iron barrel to Jiangxin Island. A furnace had already been dug there. After the iron barrel was put in, a fire was lit underneath to ensure that the entire barrel could be heated at the same time.

It only took two days for Luo Wu and his men to help Wang Zheng build the bamboo house, which was divided into four rows of toilets in four directions, with twenty squatting positions for men and women in each row.

For this reason, Wang Zheng had to end the lecture at around five o'clock.

"Don't worry, as long as you are willing to come, I will have something to do for you. I can't guarantee anything else, but eating will be no problem."

After leaving the podium, Wang Zheng left Chen Fengning here to deal with the follow-up and brought Li Si to the old blacksmith in the market.

A one-meter diameter may not sound large, but it can hold hundreds of bamboos as thick as big toes.

No, Ning doesn’t know whether the steward has enrolled in school or not.”

An hour later, when everyone had dispersed, Chen Fengning came to Wang Zheng, bowed deeply, and said sincerely, "Master, you are a great talent. When I was young, I also studied in elementary school. My conditions were ten times better than these children, but my learning progress was more than ten times slower than these children.

Looking at Chen Fengning, whose face was red with embarrassment, Wang Zheng smiled and shook his head, "I don't want to investigate your identity, and you don't have to care too much. Let's just keep going on like this."

After Wang Zheng finished explaining addition and subtraction, not only were sorghum planted in the areas that had previously needed to be reclaimed, but even the surrounding hills were reclaimed and a lot of grain was planted.

Chen Fengning was shocked, "Yeah, what about the chief steward?

The best way to shape bamboo is to steam it at high temperature. If you can add high pressure, you can cook the bamboo into noodles and make it into any shape you want.

Wang Zheng agreed.

Wang knocked on the iron barrel a few times and said, "It's a bit thicker, but it can also increase the pressure. It's not a mistake, I guess."

An hour later, a rocking chair appeared in front of everyone.

On the third day, Luo Wu came with his tribesmen again. In front of Wang Zheng's puzzled look, Luo Wu explained: "Since we have finished the spring ploughing, there is nothing else to do. I will build some bamboo beds in your houses. It's free, just provide meals."

Everyone was relieved by this. Luo Wu shouted from below: "The food won't get worse, right?"

Wang Zheng agreed again.

After an hour's class, my throat will inevitably feel a little uncomfortable.

The next day, more people came, including Han and Ba people. They said they could help with the reclamation without asking for money, just providing food.

"That's all for today's class. We'll start learning multiplication and division tomorrow. There's no need to open up new land starting tomorrow. We've completely missed the farming season, so there's not much point in opening up new land."

Wang Zheng's words caused the crowd to become noisy. If they stopped clearing the land, it would mean they would have no food to eat. Although attending classes was also important, having food to eat was the most important thing. After all, the food here was really good.

"We followed your method and first got a large piece of iron sheet, rolled it into an iron barrel and glued it together with molten iron. It took a lot of effort to get this large iron barrel out. I have tested it and I guarantee it will not leak."

"Did you get the stuff out?"

The number of people working on the land reclamation has grown from a few hundred kids at the beginning to more than 3,000 people now. Some of them came from as far away as 20 miles away. They left at daybreak and hurried back after listening to Wang Zheng’s lecture.

With more and more people attending his lectures, Wang Zheng had to bury several large vats in front of the podium to ensure that his voice could spread out and be heard by everyone. Even so, Wang Zheng still had to speak as loudly as possible.

Half an hour later, Wang Zheng, wearing thick gloves, pulled out a soft bamboo from the big iron bucket.

Similarly, if you study hard, you can also get a handful of corn every day. Don’t cry this time. You must learn well before you can get corn.”

Wang Zheng smiled and said, "Don't worry, it will only get better. You can bring bamboo tomorrow. Any bamboo will do. One hundred kilograms of bamboo is five tung trees. Each person can only collect one hundred kilograms per day."

Li Si went up to try it and almost broke the rocking chair. It wasn't because Li Si was too heavy, but the sudden feeling of weightlessness made this guy panic, and he tossed around in the rocking chair in a panic.

Wang Zheng hurriedly held onto the rocking chair, but Zhang San pulled him up and complained, "Can't you be slower? You almost broke something the host made."

Li Si smiled foolishly a few times and did not make any explanation.

Zhang San sat on it and tried it out. "This thing is comfortable to sit on. It makes me feel relaxed. Those gentlemen will definitely like it. This is a good business to make money."

If you want to promote bamboo products, you need to have a flagship product, and Wang Zheng finally chose a rocking chair.