At the beginning, his wife came to him, and he became rich by selling kidney treasures.

Xu Qing couldn't help but smile bitterly. This sister was really stubborn.

She is completely different from the gentle and obedient girls from aristocratic families. It would have been better if she was a boy, but she is a girl.

"Since you don't want to leave, stay here for a while."

"I'm not in a hurry to go back." Xu Qing said, shaking his head with some helplessness in his eyes.

In fact, he was still very anxious. The war was intense at the border and only his father was holding on. His uncle was in the court and could not provide much help. He urgently wanted to return to the front line.

Just to bring Xu Yating back, my uncle gave a strict order, and even my father sent a message from the border asking him to do it.

Helplessly, he had to wait here.

He knew his sister's character well. If he really took her back by force, she would really fight to the death!

"By the way, don't you want Ren Hao's papermaking technique? Do you need my help?" Xu Qing asked.

"No need!" Xu Yating snorted and turned back to the room.

Xu Qing rubbed his brows and couldn't help but sigh.

……

In the afternoon, Ren Hao continued to dig a swimming pool at home.

After a whole morning, he and Xu Qing had only dug less than one-fifth of the land and were already exhausted.

Seeing that there were still many projects to be done below, even Ren Hao couldn't hold on any longer despite his physical strength.

So fucking tired!

"It's better to spend money to hire someone instead of working yourself to death!" Ren Hao sighed.

They came to the construction site next door and asked Xu Hu to go to the village to recruit ten more people.

There is strength in numbers, and manpower is cheap. Ren Hao spent it generously, only two copper coins per person per day. Together with Yang Si and Xu Hu, it was only about a hundred copper coins, which was equivalent to a piece of paper.

This is the value of technology!

For example, it’s a piece of silicone. Some people make it into a floor mat and sell it for dozens or hundreds of dollars.

Some people make it into adult products and sell it for tens of thousands! It’s so shady!

The same is true for the paper made by Ren Hao. Using the same bamboo, some people make simple tools worth one or two copper coins, but Ren Hao can use it to make paper worth one hundred copper coins per sheet.

So, that makes sense!

Thus, Ren Hao's brief interest in doing things himself dissipated, and he freed himself to become an overseer.

While watching everyone digging the swimming pool, Ren Hao took out his crossbow and started to modify it.

The crossbows I made before can only be considered defective toys. They are very powerful, but their durability is very poor.

Even though the hemp rope was wrapped with silk thread, Ren Hao found in subsequent experiments that the bowstring was becoming looser and looser, and was about to break after a few more uses.

In desperation, Ren Hao bought some cow tendon ropes when he went to the county town last time.

These processed tendons are very tough and durable.

Ren Hao first lengthened the crossbow by ten centimeters to give the arrows a greater shooting distance.

The bow has also been lengthened, using multiple layers of bamboo to greatly increase its pulling and elastic strength.

As for the manual loading and firing method, it was also changed a bit. Using the few firing methods of repeating crossbows that he knew about in his previous life, Ren Hao also figured it out for a while and made an arrow box. He filled it with arrows, which could be quickly pulled open after firing once and then fired again, eliminating the manual filling step and greatly increasing the firing rate.

However, the quiver he made was smaller and could only hold ten arrows at a time.

This is to avoid blocking the line of sight. Otherwise, if the arrow box is placed too high, there will be no place to aim.

Just when he was making the crossbow, Xu Qing came alone.

Seeing that the courtyard was still being dug, Xu Qing asked curiously, "What are you digging such a big hole for? A vegetable cellar?"

"This is not the north. Can the vegetables be kept? Besides, why store so many vegetables?" Ren Hao rolled his eyes at him.

Xu Qing smiled and didn't care. He walked into the room and moved a chair, sat next to Ren Hao, and watched Ren Hao fiddling with it with interest.

In Caixu Village, Xu Qing was feeling a little bored due to being idle. After looking around, he found that only Ren Hao's place seemed interesting, so he came here uninvited.

As he watched, a look of shock gradually appeared on Xu Qing's face!

Originally, when he saw Ren Hao making bows and arrows, he didn't take it seriously. After all, these bows and arrows used by ordinary people were too common, and he could easily break the bowstring.

But when he saw the crossbow that Ren Hao was using, he couldn't help but be shocked.

He held his breath and watched Ren Hao's work intently.

An unknown amount of time had passed before Ren Hao finally finished making it. He filled it with arrows, went outside, looked around, and landed on a poplar tree as thick as a bowl not far away.

After pulling the string hard, Ren Hao pulled the trigger towards the poplar tree.

Whoosh!

boom!

With a loud bang, the arrow directly passed through the edge of the poplar tree and fell to the ground, turning into a broken stick.

Ren Hao frowned slightly, the accuracy is still not enough!

"I'll do it!" Xu Qing came to Ren Hao, snatched the crossbow while he was distracted, and pulled the bowstring like Ren Hao.

Feeling the powerful force of the bow, he couldn't help but be shocked.

Aiming at the poplar tree, Xu Qing pulled the trigger.

Whoosh!

boom!

This time, the arrow penetrated directly into the tree trunk, causing Xu Qing's scalp to tingle!

What a powerful force!

He drew the bowstring again, the arrow was automatically loaded into it, and Xu Qing pulled the trigger again.

Whoosh!

boom!

A thinner branch broke instantly!

Xu Qing was so shocked that his mouth opened wide!

It can even fire continuously!

As we all know, archers are the strongest in the army!

Drawing a bow requires not only strong arm strength, but also a lot of practice to be accurate.

Even archers need extraordinary physical strength, otherwise the bows used in the army are often very powerful, and ordinary people will not be able to pull them anymore after a few attempts.

Therefore, in terms of physical fitness, archers are also the strongest!

At the same time, as long-range shooters, archers are also equipped with the best equipment. In addition to bows and arrows, the weapons they carry with them are also very important. They can shoot the enemy from a distance or fight at close range.

The scenes in movies and TV shows where a bunch of people just casually shoot arrows are almost unrealistic.

Archers are the most elite!

It is also because of this that the number of arrows that archers can fire in a short period of time is limited. Just drawing the bow consumes a lot of physical strength, and they also have to load the arrows themselves.

But Ren Hao's can actually be loaded automatically, which makes Xu Qing's scalp numb with shock!

"Your crossbow is amazing!" Xu Qing exclaimed.

"Not yet." Ren Hao took the crossbow and frowned slightly: "It consumes too much energy when drawing the bow. There are ten arrows in it. If you shoot all of them, you will lose half of your strength."

"Never mind, it's already amazing that you can shoot continuously." Xu Qing praised.

If such a repeating crossbow could be installed in the army, wouldn't it greatly enhance the strength of the archers?