(Seeing the reader's discussion, let's say that the defeat of the front line of the Holy Alliance has nothing to do with Chen Yunying, she asked Zhou Huan to reveal the location of the granary just to prevent the Eastern Alliance from being defeated, Zhou Huan came back, she has the backbone, and she can make a lot of internal adjustments, she didn't expect that the empress of the Great Liang Empire would personally recruit and so on, as for why she didn't stay on the front line, this kind of temporary change of generals is a big taboo)

"Therefore, revolution, especially revolution, is the most difficult thing. ”

In front of Zhou Huan was a very crude weapon, and it was also very troublesome to use, but this was undoubtedly a musket.

White smoke covered the field of vision, and a lead bullet flew out, this kind of weapon is a great threat to the first-class masters in the rivers and lakes, if a large number of them are used intensively, a master of Tang Yue's level will also be killed.

Will those martial arts sects, including the imperial court, allow this weapon to be promoted? If there is no threat from foreign enemies, this thing will be deeply hidden, and occasionally an organization like the Thunderbolt Hall will appear, and it will also be exterminated under the slogan of evil demons.

"Yes, if I hadn't completely smashed the West and purged it again when establishing the country, the establishment of new weapons and new systems would not have been so easy, and the obstacles of the old forces would have been too great. ”

Chen Yunying sighed slightly, she rarely told Zhou Huan about her hard work in the West, but Zhou Huan could understand that it seemed to be a heroic growth with infinite scenery on the outside, but in fact it was dangerous and dangerous, and the test of people's hearts was very cruel.

"Even the current batch of muskets and artillery, many precision parts, it is difficult to manufacture in the factory, thanks to the help of the masters of internal strength, without them there would be no factory, no machine tools, come, show you another interesting thing. ”

Chen Yunying handed over a thick iron pipe with one end closed to Zhou Huan, the shape of this iron pipe was completely unexpected by Zhou Huan, it was a strange thing, it looked like a gun, but there was no trigger and no firing pin.

Then, Chen Yunying opened a box, and inside was yellow, orange, and orange bullets, which were similar in shape to shotguns.

"Look at how I use it. ”

Chen Yunying picked up the iron pipe, flicked his fingers, and a yellow-orange-orange bullet fell into the bottom of the iron pipe under the action of internal force, and then used the red-hot internal power to send out the way of hitting cattle in the air, lit a primer, and with a bang, a puddle of iron sand sprayed out of the iron can.

"This is the simplest musket, as long as the martial arts of the master reaches a certain level, he can operate this weapon, and he does not need to think about logistics to use it, and the bullet can also be made by himself. ”

While speaking, Chen Yunying's fingers flicked continuously, and the moment a bullet shell bounced out of the barrel, another bullet fell into the iron pipe, and continued to shoot, and a puff of iron sand flew out like raindrops, which was more powerful than the most powerful rainstorm pear flower needle in the rivers and lakes, not to mention the frequency of launch.

"The new era is just around the corner, the combination of internal strength and industry is really interesting, I need your help, by the way, Zhou Huan, how much have you learned now?"

“？”

"It's your mathematics, physics and chemistry, the science and technology you said, how many surprises can you give me this time?"

Zhou Huan is from another world, and he has science and technology that is different from this world, which Zhou Huan can't say clearly under the constraints of the system, but Chen Lihua, Tang Yunniang and Chen Yunying, three extremely smart women, all understand this.

Chen Yunying read the information left by Zhou Huan's ex-wife, judged what level Zhou Huan was at that time, and even used gentle and coquettish means to understand some of Zhou Huan's situation.

Although Zhou Huan was hindered by face, because of the system, many things were not said, and the girl did not delve into it, she also understood some things, and outlined some things in Zhou Huan's world in her heart, although many of them were wrong.

"What knowledge do you need?"

"I need all kinds of knowledge, you scoundrel, the social structure you told me last time, as well as the knowledge of mathematics, physics and chemistry, although I cared about it at first, but I didn't attach great importance to it, but after you were gone, I worked hard to start climbing the science and technology tree and building a new country, only then did I know how important some vague things were!

Compliments to my husband, your things are very useful to me, and without your knowledge, the Holy Alliance would not have been established at all. Come, incense one. ”

"Hmm. ”

Zhou Huan had ominous thoughts in his heart.

"But there are many things that you didn't say comprehensively, such as steelmaking, such as three acids and two alkalis, such as the composition of the parliament, etc., you didn't explain it clearly, didn't explain it thoroughly, I had to use human life, money, and even risk my own life to do it, I was wrong back then, I didn't listen well, this time you are back, I must be a good student." ”

"I ......"

Zhou Huan's mouth was a little dry, Chen Yunying was very right, but Zhou Huan really didn't think about it so much back then.

He just told him what he understood and learned about high school knowledge, plus some things he saw on the Internet, but he didn't expect Chen Yunying to really use high school mathematics, physics and chemistry plus political textbooks to start building quickly.

"I didn't go back for a short time, I didn't learn anything. ”

"Really?"

"Really. ”

"You won't say that the last time you went back, you were happy to play in your world, pickling girls and hanging out......"

Chen Yunying looked at Zhou Huan with a very, very desperate expression, "You won't really do that, right? The world you are in has so many technical skills like immortals, and so many technologies that can change the world by taking out a random one, but you didn't do anything during the time you went back?"

Chen Yunying's mood can be understood, just like a small sect in a small world, the beautiful master found that the male apprentice who eloped with her could actually cross the heavenly world, and even contact the cultivation methods of Yuanying and Mahayana, so she was naturally ecstatic, thinking that she was looking forward to a well-off life.

Then this disciple came back, and he actually said, "I have been playing shadow puppets and making money in the main world in those years......

What will the beautiful master think? Honey, it doesn't matter, pay attention next time?

"I ......"

Zhou Huan is also desperate, what can he do? He exchanged the skill of being able to record learning materials in the form of videos and photos to the system, but the system vetoed it, and the system told Zhou Huan that it could not be exchanged for the time being.

When a user is in the world of true qi, cultivating immortals, etc., he can't use this kind of thing to exchange for technological civilization - just like a monk who has been arrested, can he still go back to his own scripture pavilion and keep flipping through cheats, etc.?

Zhou Huan can use systematic learning to review the knowledge he understands and learned, such as high school textbooks, such as some others, and the rest are higher such as calculus, such as number theory, nuclear physics, etc., sorry, Zhou Huan must first study this course thoroughly, and comprehend it himself, you can put it in your mind and read it at any time, instead of Zhou Huan can copy all kinds of knowledge of the earth, and then package it to Chen Yunying.

Even if Chen Yunying is well-intentioned, who knows if there are other immortal civilizations silently ambushing behind them?

This is analogous to the system of Mahayana monks practicing exercises, and then let two fools copy files with USB flash drives under unsafe conditions, resulting in leaks, how could the system make such a mistake?