1. Liu Zhang withdrew his troops, leaving more than 10,000 people stationed in Shangdang County. The earthen cannons were also left to Sima Yi, and there were not many shells left, so all of them were left. The real technology of this thing lies in the production of steel, and the formulation of gunpowder. No matter how smart Sima Yi is, it is absolutely impossible to imitate it successfully. Of course, they may understand it in the future, but Liu Zhang has more advanced things, so he is naturally not afraid of Sima Yi's ideas......

The next morning, Liu Bei found that Liu Zhang had withdrawn his troops, but he didn't dare to chase them, not to mention that they were actually very cowardly now. Although Cao Cao attacked Liu Zhang, he couldn't break the city, basically harassing Liu Zhang, making him too tender. Liu Bei absolutely believed that Cao Cao would not be able to defeat Liu Zhang, and he would not even be able to capture any of the cities where Liu Zhang was stationed now.

"Big brother Liu Zhang has withdrawn his troops......" Guan Yu said in a deep voice, to be honest, Liu Zhang is not leaving, they are leaving. He Guan Yu is confident that no one is afraid, but he is really aggrieved when he fights with Liu Zhang, and he doesn't even know how to fight Liu Zhang. The endless weapons and messy methods completely subverted Guan Yu's cognition.

Zhang Fei hasn't recovered yet, at least he is still a little confused now, and it's a little better to watch Liu Zhang withdraw. Yesterday, I was probably a little stupid to be chased by Ma Chao, and I didn't know what to do at all: "Big brother, can we get some of that weapon too?" So how did Liu Zhang get it? He Zhang Fei was confident that he was not afraid of Ma Chao, but others did not hold a gun, but a package, which made Zhang Fei powerless to use.

Xu Shu said with a wry smile: "Cao Cao can't help it, even if Liu Zhang gives us that kind of weapon, we can't make it." There was bitterness in my heart, that surname Liu was probably destined by heaven.

Liu Bei sighed and said, "Clean up the battlefield to appease the people, step up to consolidate our strength, and wait for the big battle in the future." "In the past, Liu Bei felt that he had no territory, so he was very distressed, but now he has territory and talents, but he is still distressed, because he can't beat it. In the past two days, I have been in various states such as distress and confusion, until Liu Zhang left, and I felt a little better.

Liu Zhang's entourage passed through Hanoi County, and this time Liu Zhang was going to stay in Jingzhou for a while. By the way, I took a few of my wives to Jingzhou to play for a while, which is considered a honeymoon? Later, I was looking for Huang Chengyan and Jia Xu to study the ancient steam engine, which created a symbol of the industrial age......

With Liu Zhang's arrival in Luoyang, he rushed directly to the Tiger Prison Pass. Liu Zhang believed that he only needed to show his face Cao Cao and retreat, or he forced him back from Jizhou. This old boy still holds a grudge, and he wants to force himself back? Forget yourself, after all, you don't care so much about the elderly when you are young.

When he arrived at the front line of Tiger Pass, Yan Yan was patrolling the city. Ten earthen cannons were placed on the gap in the city wall, and in the distance, Cao's army did not seem to be attacking the city today. Yan Yan has been watching around the earth cannon, this thing is nothing special, why is it so powerful? Since this thing was sent over a few days ago, Cao Cao has been directly instigated.

The soldiers charged with ladders, and they only needed to shoot through them with a single shot, and if they hit those people, they would surely die. Even a ladder will blow in two, and unless the enemy charges desperately, you can get close to the city. But they still have archers, as well as wood and stones, Yan Yan really doesn't know how they attack the city.

If you go here by yourself, you should really be a husband and a man. Even if there are as many as 50,000 enemies, even 200,000 will be in vain. The formation can't be spread here, and so many people can only watch. This caused Yan Yan to be especially fond of these ten iron bumps, and basically stroked them for a while every day......

Yan Yan didn't go down when Liu Zhang came up, there were still enemies ahead, and he still needed to watch here. Liu Zhang followed the captain and walked up with a group of people, and at a glance he saw Yan Yan looking at the earthen cannon. This thing is liked by generals who like to fight, such as Wen Ping and Zhang Ren.

"What's so nice about this earthen cannon from Heber?" Liu Zhang felt that the way they looked at these things was very strange, and he felt so scared.

Yan Yan heard the voice, and hurriedly turned around and saw Liu Zhang, and said happily: "The lord is here, the Cao army has attacked several times in the past few days, but it was beaten back before it reached the city, this earth cannon ...... It's so easy to use. "Obviously dissatisfied with the name of the earth cannon, how can such a powerful thing have such a scummy name?

Liu Zhang held the binoculars and looked at Cao Jun in the distance: "Will the leader be Cao Ren or who?" ”

Yan Yan glanced at it and said: "Cao Cao personally led the troops over, and it is a fool's dream to break through the tiger prison with this little force." Yan Yan mocked mercilessly, but this was the truth. Not to mention 50,000, even 100,000 is impossible. Unless more than 200,000 yuan is consumed, all of Liu Zhang's materials will be consumed, which is really a life-by-life landfill.

Liu Zhang felt that if he started a war, if tens of millions of people died because of his own reasons, even if he did not believe in gods, he would feel that he was too guilty. Fortunately, so far, Liu Zhang is still the victorious side. Actively produce in response to natural disasters in the following years, these can be encountered.

"Open the city gate, I'll go to meet Cao Cao." Liu Zhang wanted to see if Cao Cao would have a darker face, at this time he should find that he had no way to make an earthen cannon, right?

Tens of thousands of gold dollars went out and found out that you bought an MMP? I don't know how big Cao Cao's psychological shadow is, Liu Zhang really wants to ask. I feel like I have hollowed out Cao Cao and then given it to a fake, this exciting feeling is really refreshing.

As soon as the city gate opened, Cao Jun on the opposite side found out. Then Liu Zhang rushed out with the cavalry, and Cao Jun suddenly had a loud horn. Soon Cao Cao rushed outside the barracks with many generals, and Liu Zhang stopped far away, and did not mean to step forward.

As soon as Cao Cao came out, he saw the other party at a glance, Liu Zhang was too special, he didn't wear any armor at all. Just by looking at Cao Cao, he recognized it, as if after one more glance in the crowd, Cao Cao couldn't control his anger. He Cao Cao is not a local tyrant, he was cut off half of his leg by Liu Zhang, and Cao Cao has a toothache every time he thinks of this.

"Haha, Ming Gong hasn't seen me for a long time and misses it very much, I have run out of money recently, do you want to do a business?" Liu Zhang was so direct and straightforward, he didn't notice Cao Cao's black face at all. Anyway, he was originally blackfaced, and he couldn't tell if he was gloomy or not.

Cao Cao put his hand on his thigh and pinched himself fiercely. I repeatedly warned myself in my heart that I must be stable and never get angry: "General Liu's earthen cannon is really a good thing?" Seeing the power of the earthen cannon again, Cao Cao felt deeply uneasy.

Liu Zhang nodded and said, "Of course, this is the embodiment of the current peak technology." Of course, you don't understand what technology to say, it's not that I'm laughing at you, all of you can't do it combined. You are all capable rulers of the world, and in my opinion, none of you can really change. "Talent is to govern the country, and science and technology are the foundation of the country, which has been since ancient times. The Han people have always been in production, and they are superior in equipment, which is a strong confidence. It's a pity that they look down on their strongest point, which has to make people feel sorry.

Cao Cao secretly muttered: "Technology? What is this? "Cao Cao, who is the main general, can't say one, two, three, but looking at Liu Zhang's appearance, it seems that this thing is very important.

Glancing at Cao Cao, Liu Zhang yawned and said, "Ming Gong is really good at playing, and he will actually cooperate with Liu Bei." You two really have a good relationship, so it seems that I will have a hard time? Liu Zhang wasn't angry, but Liu Bei probably couldn't use benevolence and righteousness to recruit talents anymore, right?

Cao Cao sneered and said: "I have never allied with Liu Bei, not to mention that the Son of Heaven has given the annexation to the general, if it is occupied by Liu Bei, it can only be said that the general is incompetent." "There is a vague smell of provocation, probably to let Liu Zhang go desperately?

Liu Zhang glanced at Cao Cao lightly and said, "What is Ming Gong doing here?" I've already made the latest weapon here, doesn't Ming Gongmo want to try it? "Mortars really don't have any technical content, but of course artillery shells still have technical content. However, after solving the problem of screws and seals, it is actually not that difficult. After Liu Zhang gave the principle of the model, these craftsmen would naturally have a way. Of course, it is still in the experimental stage, so saying this is nothing more than teasing Cao Cao.

When Cao Cao heard Liu Zhang say this, his heart was cold, and he didn't know if it was true or not, but he still had to be on guard. If it's really a powerful weapon, he still has to be on guard. These endless weapons really made Cao Cao suffer a big loss. even made Cao Cao suspect for a time that there was no need for any conspiracy and strategy at all, and a large number of weapons alone was enough to make Cao Cao very powerless.

"General Liu laughed, the general has done well over the years, the Son of Heaven misses it very much, I wonder if the general is willing to meet the Son of Heaven?" Cao Cao felt that the Son of Heaven could still suppress it, and people in this era would not say it even if they had thoughts about this thing?

Liu Zhang didn't feel anything: "Son of heaven? Are you going to send him back to Chang'an? Say it early, send it back quickly! "Whether Cao Cao will give it or not, there is no need to think about this at all.

"How can the Son of Heaven easily travel casually, and the general, as an important minister of the imperial court, should meet the Son of Heaven." Cao Cao said it lightly.

Liu Zhang's temper can't stand it: "Don't talk so much nonsense, if the Son of Heaven wants to send it back, send it to Chang'an, if you don't want to send it back, you can keep it for the New Year, don't do so many things all day long, be careful of my temper." If you dare to beat me without speaking in the future, I promise to blow up your Xu Du. "Mock yourself, or suppress yourself with words? Liu Zhang just didn't eat this set, and he didn't give Cao Cao a little face at all, and this face was turned over.

Cao Cao's face was gloomy in the sunset, and his heart was MMP. With a smile on his face, his heart galloping. After speaking, he didn't care about Cao Cao's reaction, and rode back to the city. It's not interesting to talk about it, it's certain that the big clan in Yanzhou is estimated to have a virtue with Cao Cao, and they should be more dead......