Leaving the restaurant, and then returning to the place where he lived, Xu Ding spent all the money on his body, bought some strange items, and then the group of people immediately left the city.

After leaving the city, he joined everyone, set off into the Ten Thousand Demon Mountain overnight, and returned to the cave.

During this period, some people followed and chased after them, but they were all thrown off.

Returning to the cave, he was briefed on the search and discovery of the mountains these days.

Xu Ding instructed everyone to continue to explore the mountain range, according to the Nanming people and Bai Lang, the Ten Thousand Demon Mountain is very large, and the birds of prey in it are not ordinary ferocious.

Even the Southern Ming people with firearms and equipment or the Western Qin people with sharp crossbows did not dare to go too far.

Judging by the distance, in fact, the cave is still on the periphery, and there are deep and deep canyons and mountains in it.

So more information is needed.

At the same time, Xu Ding also sent people to set up open and secret posts on various roadblocks on this side of the cave, and it must not happen if anyone finds out.

Erase immediately as soon as found.

Otherwise, the world of the Three Kingdoms and the Great Han will be in danger.

At this time, the Han Dynasty had not yet been truly unified, and half of its own territory, there were still many princes who had not been resolved, and they could not make a difference, which led to a collapse.

After confessing to his subordinates, Xu Ding returned to Pingzhou through the bronze gate.

With the things purchased from the city of 'Feng', he returned to Weiyuan Island.

As soon as he entered the island, he went directly to the Ordnance Department, and of course sent someone to notify Huaguoshan in advance to report the safety of his wife and children.

"Hmmm! Berkang is back! Huang Chengyan was fiddling with the firecracker, and saw a shadow outside the door, and when he looked up, he found that it was Xu Ding, and the vertical and horizontal furrows on his face were immediately warm and smiling.

"It's back, a little false alarm, and the trouble is solved for the time being." Xu Ding simply replied that he didn't plan to talk too deeply to Huang Chengyan, because he didn't want him to worry too much and add some pressure.

"It's okay, did you report to Huaguoshan, after you left, Yueying came once, and the mountains were in a hurry." Huang Chengyan nodded lightly, and then asked.

Xu Ding said: "I have sent someone to inform the Tao, and at the same time, I have also greeted everyone in various states, and this year can still be spent peacefully and happily." ”

Huang Chengyan knew that there was something to say when he heard this, so he put down the firearm and said: "This matter is really sharp, I thought that I had wiped it with the people of the Ordnance Department, and it could penetrate the wooden plank a thousand steps away, and the power was not inferior to that of a three-bow bed crossbow, the key is that this matter is easy and easy to carry."

It is a killing weapon in the world, and it cannot be ignored! ”

"Father-in-law has a heart, this matter is indeed an important weapon that can change the world pattern, but there are still many shortcomings, the accuracy is still a little lacking, and it needs to be ignited and excited, and it cannot be used in case of rain, strong winds and other bad weather." Xu Dingdao:

"However, I think there is a way to solve this problem, as long as the ignition method is changed and the ignition is used to start a fire and the flint is excited, it will be more efficient and more convenient."

"Wonderful, adding a small flint is indeed a lot more convenient." Huang Chengyan praised that his son-in-law was amazing, and he could think of such a simple and convenient solution to this big problem.

In this way, the large-scale production and use of this firearm became possible.

"I know the improvement of the gunpowder, but I know very little about the improvement of the gunpowder, and I don't know where to start, so I need more experiments and research from the Ordnance Department." Xu Ding said with some self-reproach.

If I had asked people to study gunpowder earlier, perhaps now I would have started from scratch, and the development of gunpowder would have reached a very high level.

That's right, before he left, he wrote the formula for gunpowder to Huang Chengyan.

The formula is very simple, which is the three elements, carbon, nitrate, and sulfur.

The ratio is the classic one sulfur, two nitrate, and three carbons.

Huang Chengyan said: "After you left, we immediately arranged people, divided into ten groups, and stepped up experimental research, so as to preliminarily get out the more powerful gunpowder, and after finding a suitable place to establish industrial production, please ask the Ministry of Industry to find and deploy raw materials." ”

This is the tone set by Xu Ding before leaving, there are Xu Ding's orders, and all special things are specially approved.

Especially after Mao watched the test of the explosives package blowing up Xiaotushan, he was stunned.

Then there is the line for the line, and the people for the people to help the Ordnance Department prepare everything.

The whole island was working around the event, and it was extremely efficient.

Such a powerful weapon, as long as it is released, the world will be unified.

No one is more eager than these old team members to end the strife in the world and reunite the Han Dynasty.

Xu Ding was also expected of this, and he said, "Then how have you studied the gunpowder that I captured from the enemy?" ”

Huang Chengyan took Xu Ding to another secret laboratory, and then said: "The gunpowder you ordered Xu Ying to send is also carbon, nitrate, and sulfur, but there are a few trace elements in it that we can't detect. ”

"And this kind of thing!" Xu Ding understood that this thing was probably the core of the Nanming Empire.

In order to shoot a gun at a distance of 1,000 paces, the thrust of the gunpowder must be sufficient.

Otherwise, black powder would not have such a strong explosive power.

In addition, it is not a bullet, which restricts the flight trajectory and distance even more.

"Not only gunpowder, but also that kind of lead warhead, so far we have not made any discoveries and progress, in addition to the lead element itself, it should also add some special things, hardness and toxicity are also stronger." Huang Chengyan sighed slightly:

"Even the firecracker is the same, its material is made of other elements besides copper, so it is stronger and grinding, we imitated a few firecrackers, but the result is that it can't withstand the explosion of the enemy's gunpowder, and the guns destroy people, this thing is really terrifying."

The sharper the weapon, the more manpower will be lost in the experiment.

The study of gunpowder has always been accompanied by a high degree of risk.

It's all about playing with your life.

"There are other elements added." Xu Ding understood that the firearms of the Nanming people were different from the world they were in in all aspects, and there were many things in that world that did not exist here, making their beasts more ferocious, their firearms more powerful, and even their crossbows stronger.

Even people's physical fitness is more against the sky, such as the Northern Barbarian tribe.

"Father-in-law, you select a few shrewd and capable people from among your disciples and let them set up a chemical laboratory to study the enemy's gunpowder, lead bullet, and firecracker material formulas." Xu Ding thought for a while and said:

"Father-in-law, you supervise and guide the research on the invention and manufacture of firearms I gave, and I am looking for others to do other things."

Studying the production of rifles and bullets is the main direction of his future, so Xu Ding decided to hand over this matter to Huang Chengyan, which has no danger factor.

The research on smokeless gunpowder and so on can only be done by the students of the academy.

Fortunately, in these years of training, a lot of talents have also been cultivated, and there is a certain foundation.

Huang Chengyan is not hypocritical, he is good at instruments, but he is not good at chemistry, and he also understands the danger factor, since Xu Ding intends to let him avoid it, he will not live up to his kindness.

Moreover, firearms alone may be a big topic that will take a long, long time to study.

In the days that followed, Xu Ding continued to build platforms, set up various laboratories, and develop related thermal weapons.

Of course, this is also a matter of time, and it cannot be achieved overnight.

After settling these down, Xu Ding rushed back to Huaguo Mountain.

Huang Zhong, Cai Yong and others rushed back.

Because of the tense atmosphere in front of them, many of the civil and military generals also returned, just in time to participate in the wedding celebration of the two girls.

The various rituals are still according to the old rules, and this Xu Ding is familiar with it and is accustomed to it.

But this time it's just a little special.

Once married two daughters, he was still awarded the title of general Jia Weihou.

Chang'an also sent rewards and blessings, and the major princes of the world were indispensable.

Finally everything was done, Xu Ding led the second daughter into the cave room with his left and right hands at the same time.

This time, I didn't come out to accompany the guests, and everyone was not asking for attention to this gift.

The door was closed, and the guards retreated, and even the maidservants were far away.

There were only three people left in the room, and the atmosphere became more and more beautiful.

Xu Ding put one hand around one person's waist and said: "Two ladies, it's not early, shouldn't we rest, the two ladies are straightforward, do you still need to be shy......"

After speaking, Cai Zhenji and Huang Wudie lifted their heads at the same time, and then pressed Xu Ding to the bed......