Chen Yun watched it for a while and left, she was going to the kitchen to cook sauerkraut fish.

Liu Zhang was still drawing a picture of a wheelchair, and he didn't feel too angry.

It's not that he doesn't care about Xu Yan's injury, he just doesn't want everyone to worry about him.

At this time, Zheng Ying came to the study, and she only returned to the Honghou Mansion today.

Seeing that it is almost the end of the year, the business in her hands is done.

She also wanted to come back to see Liu Zhang and them, and she was also worried that the Honghou Mansion would be in trouble recently.

She saw Liu Zhang drawing a picture, and she also knew that her son was going to make something new.

"I've heard that I'm hurt, so don't be too angry. This matter will be investigated and will help him get angry. ”

Liu Che will definitely know about this matter, and someone will attack him at this time.

That's really impatient, and it will affect the training of the Han army.

It will also affect the battle against the Xiongnu, and then it will affect the plan to infiltrate the Xiongnu to spy on intelligence.

Liu Che would never tolerate such a happening, and Xuan Yiwei would report the matter to him.

There must be someone secretly calculating Xu Zhang, just to make Liu Zhang unhappy.

Liu Zhang heard his mother talking and saw that his mother came back safe and sound.

This reassured him, and he didn't know what his mother was doing lately?

He also wouldn't ask, which could involve the secrets of their organization.

"Sister, you're back, you've worked hard along the way."

Liu Zhang can only say such caring words, and some things should not be asked.

"It's not too hard, you've been in trouble lately. Don't worry, there will be less trouble like this in the future. ”

The imperial court began to investigate those forces, as long as there was a threat to the imperial court.

will be cleared, and some forces will be co-opted by the imperial court.

In this way, it will not cause trouble to Liu Zhang, and it is inconvenient for Zheng Ying to tell him some things he has done recently.

Liu Zhang is very concerned about the safety of his women and treats their lives as his own.

The three of them loved him deeply and obeyed him.

Liu Zhang also did not use the chip to control their thinking, on the premise that his life was not threatened.

"It was I who caused them trouble, if it were someone else. They don't feel the need to be so nice to women, if they lose it, they can have as much as they want in the future. ”

Liu Zhang doesn't think so, there are countless beauties in the world.

But it's really rare to be able to meet the woman you like.

"They are my good wives and they have talents. They are all about me, and I can't be sorry for them. ”

Liu Zhang said what was in his heart, crossed over, and finally met the woman he liked.

You have to do your best to protect them and give them enough respect.

Instead of treating them as ordinary playthings, respect them, and he will get their respect.

"If you think so, they'll be happy to hear you."

Zheng Ying felt that he was not wrong to say this, he cared about his woman very much.

Liu Zhang continued to draw drawings of wheelchairs and marked the dimensions of each part.

Having the craftsmen work separately saves time.

Once you've made it, you can assemble the parts.

There are indeed many high-level craftsmen in the Honghou Kingdom, and the most work they receive is arranged by Liu Zhang.

This brings them a lot of income, tired is tired.

It's worth it for them, and the price Liu Zhang gives them is also very fair.

Zheng Ying just sat on the side and waited, and it was okay to be idle anyway.

Don't bother her son to draw drawings, and when the drawings are finished, she wants to see them.

She felt that her son was too smart, and there seemed to be nothing in this world that he couldn't do.

Liu Zhang has a lot of skills and knowledge in his mind, and he graduated from the South China Institute of Science and Technology before he crossed over.

He is also very hands-on in production, and after crossing over, he draws some drawings for craftsmen to do.

They are all household utensils, which are not too difficult for those craftsmen to make.

For example, the wooden wheelchair painted today is a miniature version of the carriage.

As long as they are made to the size of each part, there will be no big problem.

The quality of the wood used for wheelchairs must not be too bad, and Honghou Mansion can provide high-quality wood.

To make a wheelchair, you also need some metal parts, which are not difficult to smelt.

and did not let them make it according to the technical level of the twenty-second century, but just let Xu Xuan sit in a wheelchair for a few days.

In order to design a wheelchair for Xu Xuan, he drew drawings for a long time.

Zhou Peng did not put a wheelchair in the subspace, probably because he thought that Liu Zhang would not be seriously injured easily.

It may also be thought that Liu Zhang can draw drawings and let others make wheelchairs.

Besides, Liu Zhang's physique is getting stronger and stronger, who can hurt him.

Half an hour later, the drawings were finally made, and he was very satisfied with the wheelchair drawings he had designed.

"Finally, the painting is finished, and when it is finished, it can be used to sit on it and use it for transportation."

With someone pushing a wheelchair every day, she doesn't get bored.

Not to mention lying down every day, Liu Zhang will arrange artificial robots to train those Han soldiers instead of her.

Zheng Ying walked to the table, picked up the drawings and looked at them.

"It looks like a car, it's different from a car."

She looked more like a seat, with two wheels and a pair of handles at the back.

"It's called a wheelchair, and the chair has four legs. Just change the legs into wheels, which is a means of transportation, designed for people with reduced mobility. ”

According to his memory, there were no wheelchairs in this era.

Wheelchairs will not appear until the end of the Eastern Han Dynasty until the Three Kingdoms, which is clearly recorded.

Because of Liu Zhang's crossing, the wheelchair was invented in advance.

"Let the craftsmen make one first, try the feeling first, and maybe need to improve."

Liu Zhang has perfected the drawings of the wheelchair, I don't know how it feels after making it?

If there are deficiencies, improvements can be made.

"The injury is not too serious, but she has not been able to walk for a while. I thought about putting her in a wheelchair so that she could walk. ”

"It's still Zhang Er who is smart enough to think of this. If wheelchairs can be promoted, blessed are those who are elderly and others with reduced mobility. ”

This is a good thing that benefits many people, and it must not be expensive.

"I'll talk about the promotion later, and I don't expect to make money with this."

There may be some problems with such a wheelchair, so let your family experience it first.

In continuous improvement, there will not be much problem in the process of family use.

Just to make them feel more comfortable in wheelchairs, he also plans to make bicycles later.

The most difficult thing to solve is the bearing problem, but the other parts are easy to make.

The bearing of the bicycle is the core of the whole car, and it is also the most difficult part to make.

Because the industrial level of this era is too poor, it is not difficult to make bicycle chains.

If it can be successfully made, it will be much more convenient to travel in the future.

"I'm also going to make a bike, the one that can be ridden solo."

Liu Zhang took out a previously drawn bicycle drawing from a drawer and put it in front of his mother.

During this time, I also experimented, and the overall structure of the bicycle can be made.

He also thought about making parts like the axles of a horse-drawn carriage, and he made a model.

After experiments, the effect is not ideal, and it is too laborious to use pedals.

Not only will you not be able to ride too far, but it will also greatly consume your physical strength.

The finer the bearings are made, the less effort is needed, and there are no bearings suitable for bicycles in subspace watches.

He decided to make a number of improvements and make sure to make the bike.

"It's a cart that looks like a horse from the outside. What kind of car is this? Can it be made? ”

"Sister, this is called a bicycle, also called a bicycle. It does look a bit like a horse, but there is one part that is not easy to make, and the part is called a bearing. ”

This era has the most primitive bearings, but they do not meet the requirements for the use of bicycle parts.

Liu Zhang believes that there is no problem that cannot be solved, so he tried it several times.

You have to endure many failures, and you will always succeed.

"It's a means of transportation, once it's made. Riding alone only consumes a certain amount of physical strength, and the bicycle does not have high requirements for road conditions. ”

Just increase the wheel friction, and then say that the bike is not too heavy.

As long as the riding skills are proficient enough, no matter how bad the road conditions are, they can easily deal with them.

As long as it is maintained daily, it can be used for several years.

Anyway, this time is also idle, so let's make the bike successfully.

The next step is to investigate who hurt Xu Zhang, and the other party touched Liu Zhang's reverse scales.

Unforgivable, it seems that the lesson for some people is not enough.

In the afternoon, he asked the craftsman to make the wheelchair, and he had nothing to do in the afternoon.

Just accompany Xu Xuan at home, so that he will not be too bored.

Zheng Ying looked at his son with a murderous look in his eyes, he really cared about his woman.

She felt an inexplicable sour in her heart, but it was a pity that her husband could not see her son's outstanding achievements.

Maybe she will be lonely for the rest of her life, and she hopes that her son will live a safe life.

Even if her son does not enter the court as an official, he will be able to be rich and worry-free for the rest of his life.

Zheng Ying felt that there were no regrets, she would die after all.