"Sir Lidian, this year's summer grain tax has been collected in advance. Do you think you can hand over the grain tax to the county town?" Chen Xu rode to the granary, and Niu Quan, who managed the granary, immediately came up to ask.

These grains are more than 4,000 stones, and the weight of later generations is nearly thirteen tons, and a truck can easily be pulled away. However, in this era, it is a huge number. If you use manual picking to the county town, it would take 50 kilograms per person to carry it, which would take 250 and 60 people to handle it. There are not so many young and middle-aged people in Qinghe Town.

Therefore, it is impossible to choose, but there are already cars in this era. Although they are still rough and the wooden wheels are not very stress-resistant, they are also cars after all. There is no big problem with pulling two or three hundred kilograms in a car.

And no matter what, it was good news that the summer grain tax revenue did not cause any trouble, so Chen Xu summoned a few people to start collecting cattle, horses and mule carts in the town.

In this era of extremely backward industry, car manufacturing is also a very technically difficult job. The carpenters in the town will build it, but the cost is too high. The running-in parts of the axle and socket are made of fine copper. The axle alone has to be close to five hundred yuan. The wheel hubs must also be made of the best dry and molded old wood, which can be dried naturally for several years. After the production is done, it must be soaked repeatedly with tung oil. It will take several years to make a complete car. It will be impossible for rich people to afford it.

Therefore, more than 300 households in Qinghe Town finally found only twenty-three cars after collecting them.

This is just like the ones that were able to sell cars in towns in the 1990s. These people are definitely rich people of the present.

However, rich people don’t help but meet powerful people. With Chen Xu’s order, the twenty-three cars were obediently tied up by the owner and pulled them to the grain warehouse.

However, Chen Xu didn't use the car in vain. He agreed to use it and repair it if it was broken. After paying all the taxes, each family compensated one stone of grain.

In addition to driving, there are nearly 60 cattle, horses, mules and donkeys. All animals in the town that can be camel-like were temporarily requisitioned by him. If pigs, sheep, chickens, and dogs can be camel-like, he would probably requisition them without hesitation.

Under Niu Quan's command, dozens of people began to count and load the trucks. After nearly an hour of busy work, they repeatedly checked and then signed and sealed. A total of nearly 400 stones of tax grain were escorted to the county town by You Jiao, three pavilions and fifty soldiers recruited by the town.

This time, the county town is only fifty miles away. Although most of it is mountain roads, the road conditions are relatively good. If nothing unexpected happens, it should be available within two hours. This was the case every year before, and there was no mistake, so Chen Xu didn't take it too seriously.

However, this efficiency is too low. In this way, it takes more than ten days to complete the food of more than 4,000 stones.

Seeing the cow, horse, mule, donkey and the convoy leaving, Chen Xu breathed a sigh of relief and had a headache.

Fortunately, the tax payment period is more than a month, and it is not too far away. Just do it slowly every day.

Time flies four days.

The process of paying tax grains was indeed not at all wrong. Although it was slow, the grain in the warehouse was also decreasing, which made Niu Quan feel much more relaxed. You should know that the grain was in the granary, so it was his responsibility to lose it and get fire. Thousands of stones of grain were gone, and he could not afford to grind him into powder, so he could only keep urging him every day.

Chen Xu's mood has been very relaxed and happy these two days.

Paying tax grain is only one of them, mainly because good news came from papermaking workshops. Some of the semi-dried paper dried on bamboo sieve can be completely removed. Therefore, hundreds of pieces have been made in the past two days, and they have been laid on pottery boards to dry. Now they are stacked together and pressed with stone slabs. It is estimated that they will be used in a few days.

Therefore, he rode a horse and hummed a small song to the elementary school leisurely and contentedly.

This morning he will give students a simple physics class.

A group of half-year-old boys, who were about ten years old, had already been waiting in the classroom.

Some people dozed off in literacy classes, and more dozed off in math classes. As for abacus classes, every time someone was beaten by Niu Quan with a ruler, the back of his hands swollen. Chen Xu took the time to listen to the class twice and found that there was almost no difference from later student teachers.

The classroom area is about 30 square meters. Because it was built in a hurry, the ground of the rammed earth was not only wet, but also bumpy and not flat. Because they were all kneeling, there were no stools and chairs. They were all laid on the ground with a broken brown mat or a trellis mat. The desk was also two stones and a piece of wood. The bamboo slips and brushes were very rough, and the ink was also ground with carbon ash and water. Basically everything was in the most simple and original state.

The favorite thing for a group of students is Chen Xu to give a lecture. Although he only attended two sessions, it was relaxed and interesting. Therefore, when Chen Xu gave a lecture, not only the students liked it, but even Mr. Chen would sit behind the class with great interest. Niu Quan was naturally there, and Yu Wuya was just like other students, sitting respectfully behind a desk, with a serious attitude and a respectful expression.

Because only he knows that Chen Xu talks about the contents of the three volumes of heavenly books. This knowledge has the spirit of immortality. If you learn some, you may become an immortal one day.

Chen Xu walked to the podium, picked up a teaching stick made of green bamboo and tapped it on the wooden table a few times and said, "Today I will tell you about friction."

The noisy children immediately calmed down and sat down with wide eyes.

Chen Xu was very satisfied and started to speak after coughing, "Friction is a universal force. Its principle is the resistance generated by the interaction between two different objects. What is the object? In short, the object is something that we see or cannot see, such as wood, stone, water, ice, and even wind. For example, when we walk, if there is no friction, we will not be able to control our steps at all. After the rain, the ground will be very slippery, so the friction will decrease. What will happen after the reduction?"

“Wet the shoes!”

"Dirty clothes!"

“Can fall~”

A group of children began to yell excitedly.

Chen Xu pointed at a child with the bamboo stick in his hand and said, "Yes, slippery ground is the easiest to fall, and only wrestling will cause dirty clothes. What happens?"

All the children began to think about it, and even Yu Wuya, Chen Lao and Niu all began to think about what would happen after they got their clothes dirty.

"I will get beaten after getting dirty. When I go back, my parents will spank with sticks, right?" Chen Xu said with a smile.

"Yes~" a group of children shouted loudly while bursting into laughter.

"Of course, there is another oldest legend about friction. Do you know the story of Suiren's drilling wood to make fire?"

"I don't know~"
Chapter completed!