Da Song a knife

Chapter 121 Practical Issues
Zhang Sijiu said succinctly: "There is a problem with the proportion of the model. These small stones are too big for the model. There will be no such big stones in the real field, unless it is to open up wasteland. But if it is, it can Just remove the sowing part and use a roller ruler that is more suitable for plowing. And replace the manpower with cattle or horses."

"The mature land, those stones, have basically been cleared, especially the rice fields. The basic soil is very fine. You only need to make it a normal size, and it is always pushed up by the stones, which causes the problem of not being able to plow the soil pit. won't happen."

"The second problem is that the seeds will get stuck and can't come down, so there will be gaps. In this case, the real proportion should not get stuck. After all, it should be only wheat and rapeseed that will be sown in this way. Or Some vegetable seeds. These seeds are not that big, and they are not easy to get stuck. If you are really afraid, you can set a push rod so that even if it gets stuck, you only need to push it, and the seeds will loosen."

After saying this, Zhang Sijiu smiled: "Your research reminds me of some medical devices. In fact, if you want to do it, you should try a larger ratio, so that even if you fail, it will be easier to find the actual device. Problems. When making a model, there is still no way to restore everything in proportion, and many problems will arise.”

Yang Yuanding had no intention of discussing the future with Zhang Sijiu at all, his mind was full of how to transform the planter.

He waved his hand: "I know, I know. I'm going to find the blacksmith now!"

He ran away after speaking.

The look of burning his butt made people wonder if he really encountered an urgent matter.

Zhang Sijiu watched his back disappear at the speed of a [-]-meter sprint, and couldn't help shaking his head: Hey, people who engage in research and development are always like this!

However, she still understands this feeling very well.

When the eggs were cooked, Zhang Sijiu went to look for Mrs. Xu.

It was earlier today, and Xu was a little surprised: "Sold out so early?"

Zhang Sijiu nodded: "Not many."

"Business is so good, you can get some more tomorrow." Mrs. Xu said with a smile while carrying the burden.

But Zhang Sijiu shook his head: "No more."

"Why?" Xu turned her head to look at Zhang Sijiu in bewilderment, she really didn't understand why she didn't earn money when she was rich: "Aren't those students in the school quite rich? We don't sell it expensively—"

"Second Aunt, there are only so many people in the school. If I really sell everyone, then others will have no business to do." Zhang Sijiu avoided a pit in the road and explained softly: "At that time, others should Hate me. I'm just a kid, and I can't beat them if they do."

There are plenty of ways for a group of adults to deal with a child.

Zhang Sijiu didn't want to cause public anger.

Xu Shi was stunned.

She really didn't think of this question.However, now that she knew who Zhang Sijiu was behind the idea, she immediately laughed again: "I didn't expect Yang Sanlang to understand this truth. If he goes into business, he will definitely make money!"

Zhang Sijiu thought about Yang Yuanding's ecstatic hawking, and nodded sincerely: He's going to do sales, and it will definitely be the best seller.

Xu was a little envious: "If Xiaosong and Xiaobai are half as smart as someone else, I don't worry about them having a bad life in the future."

Zhang Sijiu comforted Xu Shi: "Xiaosong and Xiaobai are also very smart. After studying in the future, even if they can't catch up with Yuan Ding, they will definitely be better than ordinary people."

This is a low class in everything, only reading is high.And the era when a noble son can be born from a truly poor family.

Reading is definitely the most beneficial thing.

Mrs. Xu nodded in agreement, "I will definitely work hard to make money."

Then send Xiaosong Xiaobai to study!

Zhang Sijiu laughed: "Yes, Second Aunt, let's work hard to make money together."

But at noon, after helping Mrs. Xu sell the meat, Zhang Sijiu didn't go home, but went directly to the medical clinic.

Today is the day to study.

Before Mrs. Xu went back, she specially gave Zhang Sijiu five dollars to eat a bowl of noodles.

Zhang Sijiu accepted it with a smile, feeling a little warm in his heart—this is the concern from his family.

Five dollars, in fact, can only eat a bowl of chicken noodle soup.The kind without a single piece of meat.

However, Mrs. Xu herself was reluctant to eat such a bowl of noodles.

If it were Mrs. Xu himself, at most he would eat a bowl of coarse-grain noodles like Sanwenqian, the real Yangchun noodles—except for a few drops of sesame oil, there was no oil at all, and they could only fill the stomach.

Zhang Sijiu cherishes this concern very much.

This represents family.

When you have a family, you have a home.

She was finally no longer alone.

Zhang Sijiu entered the hospital in a good mood, and then met a patient whose whole leg was bloody and was sent here.

Doctor Qi and Cheng Wanli didn't bother to say a word to Zhang Sijiu, so they rushed over.

Zhang Sijiu also followed without hesitation.

The patient has passed out.His face was pale, his breathing and heart rate were slow, and he had typical blood loss.

However, this patient did not take any measures to stop the bleeding, allowing the open wound to continue to bleed.

Zhang Sijiu immediately pulled Cheng Wanli's sleeve: "Old Cheng, Lao Cheng, use a piece of cloth to tie his wound tightly."

Cheng Wanli did so without hesitation.

Dr. Qi was busy giving the patient an injection, so he couldn't care about Cheng Wanli and Zhang Sijiu's actions at this moment.

The person who brought the patient, whose clothes were also stained red, sat there paralyzed, wheezing and panting but still unable to recover.

Zhang Sijiu went over and asked, "How did the patient get injured?"

"Bumped his leg. The wheel of the wheel passed over his leg." The other party wiped his face, his hands were trembling: "He suddenly turned out, and the horse was frightened."

When Zhang Sijiu heard that it was a crush injury, he turned his head to look at the bloody wound, and his heart sank: The crush injury, the subcutaneous tissue damage is the most serious, and it is very difficult for debridement.Later suturing is even more difficult.

Most importantly, damage to the bones.

Fractures caused by rolling are prone to bone fragments.Once it is not cleaned up, the infection will not be mentioned.Just talking about bone connection is a big problem.

Considering the patient's excessive blood loss, the most suitable method is... amputation.

So the question is, in this day and age, if a limb is amputated, can it survive?

Zhang Sijiu turned around and returned to Cheng Wanli's side: "How to cure it?"

Cheng Wanli had finished observing the wound.

He didn't look at Zhang Sijiu, and then looked at Dr. Qi: "Brother, what do you think?"

Dr. Qi shook his head: "I'm afraid it's difficult. The leg is like this, and I can't put it back together."

Zhang Sijiu raised his eyebrows: Do they agree with each other?What about treatment options? ?

　See you tomorrow~
　　
　
(End of this chapter)