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Yu Ming shook his head lightly at this time and said, "Lord Zhou, in fact, this problem is not difficult to solve!" You only need to replace the bamboo tube with a copper pipe or an iron pipe to solve the problem of easy bursting. In addition, there is another important reason why the crockpot flies closer: when the explosion of gunpowder produces a large amount of air waves, which impact the crockpot at the nozzle. However, due to the irregular shape of the crockpot, many of the impact gas waves formed when the gunpowder exploded leaked through the edge of the crockpot, so it could not be sprayed on the bottom of the crockpot...... So naturally, this oil crockpot can't fly far. ”

After Zhou Qiang heard this, he also suddenly realized: "That is the case, then Weichen changed the side of the crockpot into a cylindrical shape, so that it can match the copper pipe wall, presumably this can fly farther, right?" ”

Yu Ming nodded with a smile and said, "Lord Zhou, changing the shape of the side of the crockpot is only the first improvement measure. I suggested that the bottom of the pot be changed to a flat surface, so that the air wave would be evenly affected when the gunpowder exploded, and the crockpot would not deviate...... In addition, it is also advisable to change the head of the crockpot to a conical shape, so that it can reduce air resistance when flying. ”

Zhou Qiang's eyes lit up when he heard this. His experience in ordnance research is far from being comparable to Yuming, but he suffers from the lack of Yuming's insight from later generations. But as soon as he reminded him, he naturally quickly came to his senses.

It's just that he said with some embarrassment: "Your Majesty, your opinion is good!" It's just that if the cannon is made of copper or iron pipes, the cost is only ......."

After hearing this, Yu Ming waved his hand and said, "Lord Zhou, you can rest assured!" The cost of researching artillery, I can approve as much as you want! If it's not enough, ask for the eldest grandson and princess! I'll say hello to Innocent! ”

Zhou Qiang was overjoyed at this time, and smiled from ear to ear.

Yu Ming smiled again and said: "Lord Zhou, regarding the development of artillery, I would like to make a few more suggestions, please test it with a few craftsmen to see if it is feasible!" ”

"We're listening!" Zhou Qiang said respectfully. He was now convinced by Yu Ming, but he didn't expect that this young Emperor His Majesty would be so versatile and dabbled in all aspects.

Yu Ming said loudly at this time: "The first suggestion is that Lord Zhou can install a sight at the nozzle when casting the barrel of the cannon, so that the caster can aim at the crosshair to improve the hit rate of the cannonball. ”

"Sights? Foresight? Zhou Qiang was a little confused when he heard it, he had never heard of these two terms.

Yu Ming had no choice but to order someone to take a pen and paper, and draw a rough pattern of a sight for him on the paper.

"This is the sketch of the sight, and the crosshair is like this......" Yu Ming explained while gesturing at the mouth of the bamboo tube for a while before Zhou Qiang understood.

Then, he added, "My second suggestion is that the shell casings that are fired out should not be used in crockpots. It was brittle, and it was not easy to carry on a battleship, and if it fell on the deck one day and shattered, it would harm your own battleship. I recommend either bronze or black iron. Don't put any fire oil in it, just fill it with gunpowder. In this way, the shells fly to the enemy ship and explode, which can not only blow up a large hole in the hull of the ship, but also injure people by splashing the metal fragments of the shell shells, and the lethality is huge. Yu Ming continued.

"It's easy to make shells of cannonballs out of bronze or iron, and it's not difficult to put gunpowder in them, but how do you make a cannonball explode on an enemy ship?" Zhou Qiang asked with a frown.

Yu Ming patiently explained at this time: "This involves the problem of fuze. The fuse at the mouth of the bamboo barrel that you lit with a torch before is called a lit fuse, which is used to fire cannonballs. However, the fuse on the shell is a trigger fuse, or a time-delay fuse......"

In fact, he also knows a little about this fuze problem, but he doesn't understand it. Anyway, according to his own understanding, he explained it to Zhou Qiang, and as for whether Zhou Qiang can study it, the kind of cannonball that will explode when it touches the ground is only left to fate. After all, according to the normal development of science and technology in history, it should have been more than six years later in the Yuan Dynasty that the first real artillery in human history appeared.

Originally, Yuming also wanted to make the first suggestion, which was to let Zhou Qiang try to carve a spiral-shaped trunking on the inner wall of the copper pipe to make it a rifled cannon. In this way, when the shell flies out, it rotates along the middle, which can greatly increase the hit rate.

However, he thought about it for a while and forgot it, just the first two suggestions, I don't know how long it will take Zhou Qiang to study it. Don't add any more burdens to him, Yuming hopes that when the army gathers in Jiangdu and sets off, there will be preliminary research results.

After dealing with this case of the Weapons Manufacturing Bureau, Yuming handed over all the preparations for the expedition, the recruitment of soldiers, and the allocation of weapons and warships to Zhou Tao and the eldest grandson Wujian to be responsible.

The soldiers, horses, and ships of the sailors were ready-made, but since they had to fight at sea, they naturally had to choose the kind of large warships with a wide hull that could resist wind and waves. And the food and drinking water contained in it should naturally be backed up more.

It is more difficult to find troops to fight on land, because now the main forces of the Zhou army are on the front line in Guanzhong.

However, considering that the Zhou army now has a greater military advantage over the Tang army, and it is possible to peacefully resolve the Tang Dynasty's secession regime. Therefore, Yuming ordered to transfer 50,000 soldiers and horses from the eastern army in Guanzhong, and recruited 50,000 county soldiers with good water properties from Jiangdu and all parts of Jiangnan, and combined them into a landing army of 100,000 people. With Zhou Tao as the commander, Song Jingang as the deputy general, Hu Sizheng as the military advisor, and King Dezhao as the senator, he first concentrated on training in Jiangdu for a month, and then slaughtered to the Ryukyus.

At the same time, Yuming also granted Zhou Tao and Hu Sizheng the right to sign a treaty with Zhou if Japan was sued for peace, and they could sign a treaty with it on behalf of the Zhou government. He also knew very well that it would take some effort to destroy Japan, and it would be impossible to destroy the country in one battle. However, it is now possible to gain a foothold in Japan through expeditions and establish a forward base for the future conquest of Japan.

After arranging the war with Japan, Yuming returned to the palace.

After sitting down in his imperial study, looking at the large number of twists and turns, he couldn't help but feel a headache.

"It's really tiring to be an emperor!" Yu Ming sighed lightly.

He picked up the fold and looked at it for a while, only to feel that his eyes were sore, and he was about to take a nap on the back of the chair, but the guard outside the door reported: "Your Majesty, Miss Yinfei has come to look for you!" I'm waiting for you in the side hall next to it! ”

The guard was his new captain of the guard, named Yu Qin, and he was also one of the few descendants of the Yu family, Yu Ming was about the same age as him, and he also trusted this fellow brother very much.

But at this time, Yu Qin had a wicked smile on his face.

"Yuqin, don't show such a strange expression, okay!" When Yu Ming saw his expression, he was also angry and funny.

Yu Qin smiled but did not answer.

Yu Ming was helpless, so he had to ask in a low voice: "When she came in, the queen and several imperial concubines didn't see her, right?" ”

"Nope! The queen has been busy organizing the treatment of the wounded who have been withdrawn from the front line these days, and she is preparing to expand the number of female medical soldiers. And the red-sleeved princess is arranging to investigate the intelligence of Guanzhong, it is said that Li Tang is internally unstable, and it is estimated that he is still in the Yamen of the Ministry of Intelligence; The eldest grandson, the princess, calculated the total cost of the expedition to Japan at the Ministry of Finance for inclusion in next year's budget. Princess Xiuning is now writing a letter to her father, and then he can make the right decision to reunite the family, and Princess Luo Qi ......" Yu Qin explained one by one.

Yu Ming breathed a sigh of relief, his wives really helped him share a lot of daily work. Without them, I don't know how tired I would be.

"Alas, if you have a wife like this, what more can a husband ask for!" Yu Ming couldn't help but sigh in his heart.

A moment later, he walked into a side hall next to him, and saw Yin Fei sitting on a chair. She wore a tight-fitting pale green brocade on her upper body, the neckline and cuffs were embroidered with silver wire, and she was also inlaid with flowers, but the color was light, and she was gorgeous and elegant.

As for the lower body, she was wearing a dark blue multi-pleated skirt, close to her hips, and a thin gold silk belt around her waist, outlining the exquisite curves of her body particularly moving. The clothes are cut and fitted, showing a slender waist, and the plump breasts are also fuller and straighter.

She didn't wear heavy makeup, she looked plain, but although she was far away, Yuming could still smell the faint fragrance on her body. Looking at her small and ruddy cherry lips and thin willow eyebrows like spring mountains, I couldn't help but lose my mind slightly.

Although her temperament is so elegant and elegant, there is a coquettish fatal allure in her bones, which is worthy of being born charming. Her smile is so natural, but it is so seductive that men can't extricate themselves when they see it.

Yu Ming stepped forward, and just as he was about to speak, Yin Fei had already preemptively said in a crisp voice: "Your Majesty, you are really busy!" Every time I come to you, the guards at the palace say you're not there. ”

Yu Ming could only smile bitterly after hearing this, this time he was busy dealing with Li Tang's war, and in the twelve months of the year, there were ** months when he was not in the Eastern Capital, and this time he came back to Luoyang because the King of Ryukyu came, so it was naturally more difficult for Yin Fei to find him.

He also felt a little guilty in his heart, because he had promised Yin Fei to marry her before, and said that he would communicate with several imperial concubines after he went back, and then accept her as a concubine. But after getting busy during this time, I fought one after another and put it on hold, and I forgot about it. If Yin Fei asks about this, how can she answer her?

But fortunately, Yin Fei obviously didn't mention this matter that made him feel ashamed, but said quietly: "Your Majesty, Yin Fei came to you this time to ask, do you have time to accompany Fei Fei out now?" It's a private visit to Weifu! ”

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