"Is this really OK for the young lord?!" A middle-aged man beside Liu Mang asked with a wry smile on the table.

The one who called Liu Mang’s Young Master is Huang Zhong. Since Liu Mang saved his Huang Xu, Huang Zhong has been calling Liu Mang the Young Master.

Liu Mang didn't know where Huang Zhong learned it, so he called him after several corrections were wrong.

When it comes to saving Huang Xu, Liu Mang's face was filled with bitter tears. Because he brought back the anti-inflammatory drugs, Liu Mang once again violated the rules. The next time he went back, it became a long time. Fortunately, the group of things that Liu Mang brought back this time was enough, most of them were books, mainly things like natural craftsmanship and other things.

It is useless to be too advanced. No matter how good the technology book is, it is useless without advanced productivity.

What Liu Mang polished on the table now is some transparent crystals. These crystals are not modern handicrafts but real crystals. They were collected by Liu Mang in half of Lu Bu.

That's all, only a few dozen yuan, each piece is a rare thing.

Huang Zhong looked at Liu Mang discarding the transparent crystals piece by piece, and Huang Zhong couldn't help feeling distressed. If these crystals were exchanged for gold and food, it would be enough for ten thousand troops to spend several months.

But Liu Mang put it aside casually, some were cut, and some were ground into powder. Even if you are prodigal, you can't do this.

"Don't worry! When did I ever feel unreliable!" Liu Mang replied casually.

Huang Zhong was also familiar with Liu Mang's speech style, and from time to time, some difficult words emerged from his mouth.

What do you ask Liu Mang? Yes, he is making a telescope, a powerful weapon in war. Running around with Boss Lu is simply a place to live, so Liu Mang has never remembered it. Moreover, with the eyesight of Boss Lu and others, the warriors are comparable to that of Hawkeye. Now that Boss Lu has territory, Liu Mang will naturally not let go when he has time. He originally planned to take it from the present world, but the rules do not allow it.

In desperation, Liu Mang had to do it himself.

These crystals are the materials used to make lenses. Although pure transparent crystals are of great value, Liu Mang was helpless. Although he had a method to refine glass, everything was not on track. He could only make it with crystals first and improve combat power for Lu Bu's army first.

The pressure in Jingzhou, Jiangdong is imminent.

With a simple telescope, Liu Mang didn't expect his own technique to make a high-end one. One convex mirror, the other concave mirror and a closed long wooden barrel to fix the two lenses.

It was such a simple method that Liu Mang made a lot of precious crystals for most of the day, and then he made a look.

"Do it!" Liu Mang was very excited to put the lens into the cylinder, and put it on his eyes to see his own results. "Hmm?!" As soon as he put his eyes on, Liu Mang frowned, and he was so dark that he couldn't see anything! He broke it!

Liu Mang was about to take down his glasses to see the problem, but suddenly found that Huang Zhong was blocking him. No wonder he couldn't see anything.

"Shanshan! Old Man Huang" Liu Mang said to Huang Zhong very disgusted.

"Oh!" Huang Zhong was confused, so he heard Liu Mang's words and walked towards the side.

Only then did Liu Mang see the scene in the distance from the telescope. Although Liu Mang did not live in the prefect's mansion, the house given by Lu Bu was not small. Liu Mang saw clearly at first glance the branches on the wall opposite the house. According to this distance, this simple telescope actually had a distance of about three times the sight.

Looking at Huang Zhong's curiosity, Liu Mang handed over the glasses in his hand.

"Wow!" I heard a scream and almost threw out the glasses in my hand. Fortunately, Huang Zhong was very good at heart, otherwise Liu Mang would have finished what he had spent a long time.

"This. This!" Huang Zhong couldn't come back to his senses for a long time. Can this thing bring things closer in the distance? If Liu Mang used it to only see Teng Man on the wall, then Huang Zhong could use it to see the patterns of the leaves.

Huang Zhong is a general who does everything and is related to war. If this thing is used in war, Huang Zhong is a little unbelievable. When others can't see you, you can see the other party. This is the prophet of the enemy. Sometimes, it will definitely be a victory in a war.

Standing on a high place, you can see the opponent's troops and formation clearly. In your eyes, there is no secret to the enemy formation.

"A magical artifact, a magical artifact!" Huang Zhong's eyes changed when he looked at Liu Mang. If Liu Mang had saved his son before and made him feel that it was a wonderful rejuvenation, then now he would be completely admiring his personal experience.

"Haha!" Liu Mang was a little disgusted. He was so goosebumps in his heart when he was seen like this. In order not to be killed by such eyes, Liu Mang quickly changed the topic, "Old Man Huang. How about Xingba?" Gan Ning and Su Fei were training the navy. For Lu Bu's army, the navy was a shortcoming. Although Su Fei and Gan Ning were strong generals in the water, they could not withstand the large number of people. Whether in Jingzhou or Jiangdong, they were mainly navy troops. Jingzhou had Cai Mao and Zhang Yun, and Wenpeng Huang Zu, and these were all generals.

Although Cai Mao and Zhang Yun were directly killed by Lao Cao in history, it is undeniable that these two men were definitely at the level of generals for the commander of the navy.

Huang Zu even blocked Jiangxia and blocked Jiangdong for two generations. After Wen Pin surrendered Cao Cao, he was recognized as the prefect of Jiangxia by Cao Cao. He has been defended for so many years.

In Jiangdong, Sun Ce, Zhou Yu, and Huang Gai, Han Dang... These are all water generals, and Zhou Yu, Huang Gai, even a Red Cliff destroyed Lao Cao's 800,000 army.

Now the Lu Bu army has only more than 5,000 naval troops, and even if they recruit another 3,000 people, it is less than 10,000. Compared to Jiangdong and Jingzhou, they are really a witch. When they meet the Jiangdong naval troops, they either are no opponents or need to hide on land to avoid war.

If the navy is hiding on the land, would it still be called a navy? Even if Lu Bu is willing, Gan Ning and Su Fei are not willing.

So Liu Mang could only find another way for them! Liu Mang had never seen the real water battle, but he knew from Gan Ning Su Fei that their water battle was first a round of archers, and then it was difficult to get on the shore battle.

The range of the bow and arrow is less than a hundred steps, and it is even lower on the shaking ship, which means that every water battle is basically based on melee combat.

In close combat, the 8,000 Bingzhou naval army was naturally not the opponent of the tens of thousands of naval armies in Jiangdong and Jingzhou, but what if the distance is wide? What about long battles? The bows and arrows are only a hundred steps away, but there is one thing that has 300 or even more. It is called a bed crossbow. Moreover, the ammunition shot from this bed crossbow does not only hurt people. According to the current naval warships, three bed crossbows can send a tower ship into the bottom of the river with one volley.

"Young lord, Zhong had already been to the camp yesterday! Although Xingba and the others assembled this giant crossbow machine, they could only shoot for one round. It was very difficult to pull the strings of the bed!" Huang Zhong shook his head. Although the drawings Liu Mang gave them were relatively detailed, the crossbow made on the drawings were far from what Liu Mang said.

The giant arrow can only shoot less than two hundred steps. Although it can penetrate people, it is difficult to shoot through thick ships and wood. The most important thing is that it will be difficult to get strings after one round. A crossbow requires more than a dozen people to put strings and bows on him again.

If it is a water battle, this kind of crossbow can only shoot one wave, and at most ten warships are placed on it. After one round, it becomes a burden, not only taking up weight but also giving the hull less space to release troops.

"Only one wave can be shot?" Liu Mang frowned. If the crossbow can only have this effect, then there is no difference between it and it. Could it be that he would be useless after spending so much effort in the end!

"Successful rain!" Liu Mang ordered, "Send this telescope to my father-in-law! Old Man Huang, let's go to the navy camp!" If the bed crossbow was well tested, Liu Mang would also prepare to put it into the urban management army. This kind of thing is extremely powerful. Although it cannot form a large scale, it can shock people. This is what Liu Mang needs.

In ancient times, unless the elite soldiers were killed or killed normally, the entire army would be dispersed, the people would panic and the morale would be gone.

That's why Liu Mang kept asking the city management army not to practice anything else, but this military spirit must have. Only with military spirit can one dare to draw the sword, and only with military spirit can one be considered a soldier.

The brave will win when we meet on a narrow road, but whoever is afraid of it will lose if he loses.
Chapter completed!