On the 10th, in the first half of the day, the hunting team led by Zhang Fei hunted five wild deer, two foxes, four hedgehog dumplings, one badger, two squirrels, and more than a dozen dried fruits taken out of the tree holes.

We also shot seven or eight magpies, pheasants and other birds. We dug out hundreds of nests and got more than a hundred eggs.

In the afternoon, Zhang Fei's men were still hunting, and the hunting grounds were changed several times. Suddenly a scout came to report that someone was coming to Julu City.

Zhang Fei handed over the hunting matter to his deputy and went to contact him.

What came was a traveling caravan, with not many people and not many vehicles, eight cavalry and four carriages.

After seeing Zhang Fei, the captain of the roving caravan ordered his men to unload the things on the car.

The soldiers climbed onto the vehicle and brought down a large, thick bundle of nets.

The ranger captain directed the net to be shaken open and pulled up, then he pointed at the net and said to Zhang Fei, "This is a bird-catching net. The military advisor specially ordered us to bring it to you so that it can be used for catching birds."

Zhang Fei came forward and looked at the thin bird net, which was no thicker than a needle. His eyes widened, "How can it be strong if it is so thin?"

Zhang Fei saw that the bird-catching net was made of very thin ropes, and he doubted the strength of the bird-catching net.

The captain of the Ranger Caravan laughed, "Haha! It's better if it's thin. Only when it's thin can you catch birds. If you want to catch birds if it's thick, you absolutely can't!"

Before the caravan set off, Li Mengxi had already explained the key to the bird-catching net, fearing that Zhang Fei would not be able to use the net properly.

Afterwards, under the explanation of the captain of the traveling caravan, several key points were discussed.

The first is that birds have rich feathers. When a bird hits the mesh and wants to fall back, its feathers are caught. This means that it is easy to get in but difficult to get out.

The second point is that the rope is thin enough so that the bird feathers can be wrapped around the netting wire and entangled in the bird feathers. If the rope is thick, the bird feathers cannot be entangled and the bird cannot be caught.

"It's just like human hair. You can try it with a rope to see if the rope is too thin and can easily get entangled in the hair," the caravan captain said.

When Zhang Fei heard this, he couldn't help but go over and try it.

Zhang Fei rolled up his sleeves to expose his arms. He put his arms to the net and pulled up a thin mesh rope. When the rope was rubbed, sure enough, his hairs were entangled in the net rope. When he pulled away, several hairs were pulled out.

What does this mean? This only shows that thin ropes do tend to get tangled in hair, but it does not mean that thick ropes cannot get tangled in hair.

Zhang Fei was so excited that he didn't believe that a thick rope would be as good as a thin one.

Zhang Fei then tried the thick hemp rope used to tie the net, and started rubbing it with his hands. As you can imagine, it was impossible for the thick rope to get entangled in the hair.

Faced with the ironclad facts, Zhang Fei finally believed it. Surprisingly, it was different from a fishing net. A fishing net would be thicker and stronger, but a bird-catching net would be finer and better.

Zhang Fei started to pull the rope of the net, but he always felt that the net was too thin and not strong.

As soon as he touched it, he touched the stick on the net, and Zhang Fei looked at the Ranger Captain.

The captain explained, "It is coated with tung oil. The military advisor said that if it sticks to the lake points, it will be easier to stick to bird feathers."

It's still bird feathers, still to stick to the bird feathers.

Zhang Fei was convinced, so many ways to catch a bird.

Since this bird-catching net had to be brought all the way and it was early in the morning, Zhang Fei simply took the net away and prepared to catch birds.

During the winter snow, everything is dormant, and even birds are rare. Zhang Fei searched around for a long time and finally found a forest. There were some bird's nests in the forest, and occasionally birds would fly from the forest.

Zhang Fei looked up for a long time and found it right here.

When it was time to set up the net, Zhang Fei discovered that the bird catching net was not that big. No wonder it took four carts to pull it apart.

The net was set up, and the four long nets were connected together, stretching dozens of feet long, which was a spectacular sight.

The net was set up, but there were no birds, so Zhang Fei ordered his horse to ride to the other side of the forest to coax the birds to this side.

All the cavalrymen dispersed.

After a while, the cavalrymen who had penetrated into the jungle shouted and chased them over. A bird in the forest was so startled that it fluttered and flew away.

Zhang Fei was watching from a distance. He saw the birds flying out, but most of the birds were magpies and turtle doves. They flew away directly from the net. Not a single bird could be caught in the net.

Zhang Fei raised his head and looked up at the sky. (That's not right.) Zhang Fei frowned and thought, (The bird flew too high and the net was pulled low. I have to... go up to the siege tower. The siege tower is high enough.)

Based on what he saw, Zhang Fei thought that if the net was pulled as high as a tree, the effect of catching birds would be excellent.

To pull the net as high as the treetops, Zhang Fei had experienced many siege battles and was familiar with siege equipment. Zhang Fei naturally thought of siege towers.

Zhang Fei must have misunderstood the use of bird-catching nets. The use of bird-catching nets should be to wait and see, leave the net there for a day or two or even a week, and then close it after a few days. The use of bird-catching nets is

Such.

However, Zhang Fei thought that the bird-catching net was the same as the fishing net, and thought that as long as the net was lowered, the birds would be caught immediately.

Zhang Fei's requirements for the efficiency of the bird-catching net were a bit too high, but he hit it right, and Zhang Fei thought of using a siege tower to support the net. As soon as this method came out, the net directly reached the height of the treetops. It can be imagined that the efficiency of bird-catching was greatly reduced.

It has to be increased by several percent.

Zhang Fei conscientiously wrote down the ninth article on military hunting: "To catch birds, you need to build a siege tower. The big birds include turtle doves, and the small ones include sparrows. Turtle doves mostly fly above the treetops, while sparrows tend to fly low, so

, so that the net can reach the top of the tree, you can catch more birds.】

It's simple. It's just for catching birds. It's a bit crazy to be able to use siege towers and siege equipment.

Anyway, the method of military hunting is not ordinary hunting. It is to improve hunting efficiency as much as possible. Cost is not an issue at all. Use towers and use towers. If trebuchets are useful for catching birds, what's the harm in using trebuchets?

——

On the same day, while Zhang Fei was pulling a net to catch birds, Li Mengxi went to the carpentry base far outside Julu City.

The carpentry camp was set up by the river, and the carpenters wanted to build an osprey boat nearby and launch it into the water to test the boat.

When Li Mengxi arrived, he saw that the river was frozen.

Li Mengxi was surprised, and then he suddenly thought, can he still fish in winter? The river is frozen, so there is no way to cast a net.

After going around in a circle, the fishing team disappeared, and all the fishermen went out.

Li Mengxi asked someone about it, and he was told that the small river was frozen. He walked downstream along the river and reached the big river. The river was strong but not yet frozen.

In other words, fishing is still possible, just a little more difficult.

After thinking for a long time, Li Mengxi thought that maybe fishing would be better in winter than on normal days?

As we all know, fish also need oxygen. In summer, when it is about to rain, there is a lack of oxygen in the pond and the fish all show their heads.

In winter, the river freezes, and the water is even more deprived of oxygen. Li Mengxi thought of how people would dig ice holes in the ice during winter fishing in the north, and then the fish would come to the ice holes to breathe. At this time, he would take a basin and catch them all.

Can catch fish.

Fishing in winter can be far more efficient than usual, and this is the help of good weather!

Li Mengxi asked Guan Yu, who came with him, if he had ever seen fishing in the ice in winter?

This question reminded Guan Yu.

"That's right!" Guan Yu's eyes lit up, "When the ice is broken, fish will gather at the place where the ice is broken. Once the net is dropped, hundreds of fish will enter the net. When the ice is sealed, it is the best time to fish."

Li Mengxi sought proof and made it clear that the technology of digging ice to find fish was not a profound technology. The working people in the late Eastern Han Dynasty had already known this technology.

However, if you know the technology, you will know it, just like Guan Yu. Didn't Guan Yu not think of this section for a while? In the same way, if you don't work together, you can't maximize production efficiency.

It has been snowing heavily for more than ten days, and the ice on the river has frozen hard. Li Mengxi can't wait to try it out to see how efficient ice fishing can be.

Li Mengxi was about to go down the river, but Guan Yu stopped him.

Firstly, Guan Yu was afraid that Li Mengxi would step on the ground and fall into the hole in the ice without being able to catch anything. Secondly, fishing through ice was unusual and required special fishing methods.

Guan Yu went to find the carpenters to prepare.

Li Mengxi was very curious about technology. He chased Guan Yu and asked. According to Guan Yu, if you want to dig out ice to cast fish, the ice hole cut out is not big, so it is difficult to cast the net, and the net can only be balled up.

Throw it into the ice hole along the ice hole, but since then, the net will not stretch and no fish can be caught.

"Xi'er, what do you think should be done at this time?" Guan Yu smiled and asked Li Mengxi.

Li Mengxi frowned and thought. If the fishing net is not spread out, then it must be spread out. But if the net is underwater, how can it be spread out?

Li Mengxi thought that if he poked it with a stick, it would not work. It would be clumsy and the effect would not be good.

He also thought that it was the net. He could build a special net that would automatically stretch when it was lowered into the water.

However, based on Li Mengxi's current understanding of technology, it is not yet possible. This kind of automatically stretching network is rare even in later generations. In the late Han Dynasty, when technology was underdeveloped, the network was even less likely to be so complicated.

After thinking about it over and over again, Li Mengxi became anxious.

Seeing Li Mengxi's confused look, Guan Yu smiled while stroking his beard, and was about to give his answer.

"I understand!" At this moment, Li Mengxi suddenly beamed, "Find someone, grab the rope of the net, run up, spin in a circle, and throw the net away? This is not the same as casting a net on the water.

The net must also be thrown away."

It's something called centrifugal force, Li Mengxi figured it out.

Guan Yu smiled happily and nodded, "Well, what you said is correct or not."

Li Mengxi, who thought he had solved the problem, was stunned. "Well, what is right and wrong?" Li Mengxi looked up at Guan Yu in confusion.

Guan Yu explained, "For one thing, throwing the net under water is not the same as throwing the net on the boat. As you said, find someone to drag the rope of the net and run in a circle. This won't work. The net is heavy and heavy under the water. One person is determined to pull it.

Do not move.

Therefore, a certain statement is either correct or incorrect.

Spreading the net underwater is really about throwing the fishnet away, but it's just a single person's work and it won't work."
To be continued...