With a respectful expression on his face, Yamamura said to William: "Yes, my lord, my subordinates are quite knowledgeable, and they also have some research on the art of war.

"Ahh William nodded, and continued, "Then would you like to write a copy of your art of war?" I hope the commanders of the troops will learn from it! ”

The art of war has never been a secret in the Celestial Empire, so there is a saying that there are soldiers, since the cultural environment and customs of the Yun Dynasty and the Celestial Empire are similar, then William estimates that it is also similar in this, so he asked this question.

Shan Cun said without hesitation: "No problem, lord, I'll tidy it up as soon as I go back!" ”

"That's good!" William smiled and said: "If I see that this art of war is of high combat value, you still need to teach them, after all, you are a little more experienced!" ”

Yamamura bowed down to receive the order, and before Yamamura walked out of the study, William stopped him again and said: "You go to find Tus first, I think your meticulous method is good, you do your own business first, where to go to Tus, he will arrange a suitable position for you!" ”

The next day, Yamamura went to Tus and got a staff position, and if he did a good job, William would personally promote him.

And after he became a staff officer, in addition to giving some advice to Tus, he stayed in the office all day, writing the book on the art of war that William wanted.

And Jia Yu also commanded the carpenters in the territory in the past few days to make the waterwheel.

The waterwheel was placed on the edge of the river, and sure enough, it brought a large splash of water into the farmland.

William looked at the height of the waterwheel and knew that this was the real powered waterwheel.

Jia Yu followed William's side, and when he heard William praise the waterwheel he had made, he couldn't help but feel slightly complacent, but he still had a humble smile on his face.

William pointed to the waterwheel in front of him that was raising the water high, and said to Jia Yu: "Jia Yu, find a way to transform the kinetic energy generated by the waterwheel, can you use the waterwheel to drive the sledgehammer instead of the blacksmiths to beat?" ”

"And the mill, if you can use the waterwheel to drive these things, you should be able to free up a lot of livestock to do other things, and then you can go to the blacksmith and the carpenter to see if it is feasible!"

Although William said so, he knew that this method was absolutely feasible, and if there was no hydraulic stamping, where would the Renaissance standard plate armor come from.

If it is a plate armor that the blacksmith knocks out by hand, the cost is definitely not able to be popularized to the soldiers, so once the hydraulic stamping is successful, then the plate armor, no matter how bad it is, is also a cuirass, and it will come into being, and then William's army will go to a higher level.

Jia Yu immediately said that he would discuss it with the craftsmen.

I have to say that no matter how ignorant the Holy Sect world is and how underdeveloped science and technology are, these craftsmen are definitely experts in this area.

William just pierced the layer of window paper, and the craftsmen immediately reacted to William's intention, and in just three days, the hydraulic stamping device was made.

In fact, the improvement was not very large, and since William installed the gears on the crossbow, the craftsmen have become more and more skilled in the use of gears.

They just installed a few large gears on the waterwheel, and successfully converted the kinetic energy into a round-trip power of one up and one beating.

William looked at the piece of steel being forged in front of him, and he was quite satisfied.

William gave the plan to make the plate armor, but the blacksmiths said it would be difficult to complete.

This couldn't help but make William a little puzzled, although he knew that it was more difficult to make plate armor, but it should be easier after the emergence of hydraulic stamping.

What he didn't know was that before the advent of hydraulic stamping technology, plate armor had actually appeared, and hydraulic stamping, as an improvement in productivity, was actually only able to reduce the cost of plate armor, and there was no major breakthrough in technology.

The real difficulty of plate armor lies in the dome of the armor, which is a very difficult way to handle and requires many techniques such as cold forging and quenching.

It is very difficult to decarburize the kind of plate armor that is cast, and the quality is not up to par.

As a last resort, William had no choice but to let the blacksmiths forge a cuirass that was not particularly large, just an arc, rather than an eggshell-shaped plate armor that had developed to the extreme.

This type of plate armor has slightly less defense, and its ability to slice through and bounce off enemy attacks is also somewhat worse than that of eggshell-shaped plate armor.

That's it, it was forged by a hydraulic press after two days of hard work, although it was not as good as the Renaissance hard steel eggshell plate armor of the previous Renaissance and muskets, but there was still some discipline that could be done in the face of the current cavalry spear to produce a bullet attack.

Compared to the multi-layered armor used by the knights before, the plate armor not only has a slight increase in defense, but also a lot less weight.

William looked at the plate armor in front of him that could be equipped on his chest, and he was quite satisfied, after all, in terms of the culture and technology of the Holy Sect world at this time, it was similar to the early Middle Ages in his previous life, and it was already very good to be able to appear such a cross-era equipment as plate armor.

Although plate armor can only be used from the front of the chest to the abdomen, it is sufficient, and other parts of the body can be used with iron plates of various shapes.

That's what the previous Iron Cross Knight did, covering his shoulders and arms with this fitting armor, and as long as he was equipped with a layer of encrypted chain mail inside, and some scale armor on the joints, he should be able to have a strong defense.

That's it, it was Jia Yu who provided the inspiration for the blacksmiths to carry out cold forging, as well as a series of corresponding techniques, although the Yun Dynasty did not have this kind of plate armor, but the technology of other armors could also be used.

William put this plate cuirass on his body, and a thick and reassuring feeling came, and when he knocked it, he listened to the sound extremely heavy.

Although plate cuirasses have already been manufactured, in order to mass-produce them, it is still necessary to build a large number of waterwheels and popularize hydraulic stamping, and for a while the original equipment must be used.

In this way, a month has passed, the season has entered the early spring, the spring ploughing has almost been carried out, and the annual routine large-scale reclamation activities are also in full swing.

Charlemagne was relatively leisurely during this time, and he didn't have much to do after returning from the jihadist battlefield except for some lessons that he had to learn.

He and a few friends wandered around the castle, the residential area outside the main castle, and on this day, Charlemagne met a young girl before going out.

"Hey! Don't get in my way! ”

Charlemagne is proud, not the kind of arrogant pride that no one else looks at, but he is also very proud.

For the collision of the maid in front of him, this was undoubtedly an offense to him.

"Right...... I'm sorry...... Please...... Please forgive me for my negligence! The maid lowered her head, her smaller body trembled slightly, like a frightened fawn, her tone was full of weakness and grievance, and she begged Charlemagne for mercy with a trembling voice.