Coming through, Liu Yi has been influencing the people around him with his insights and thoughts beyond this era, of course, this influence has been limited to a certain range under his deliberate control, after all, the difference between two thousand years can never be filled in an instant. However, with the continuous improvement of his status, the intensity of control has also been slowing down, especially after ascending the throne, Liu Yi has been able to let go of his hands and feet to make innovations in this era, and now it is just the beginning. Of course, you have to eat one bite at a time, and the innovation and improvement of society is by no means a trivial matter, and the slightest carelessness will have the opposite effect.

This kind of influence exists in various fields, but the most important thing is people's thoughts, so far Liu Yi's biggest harvest can be said to have three points, one is to some extent changed people's thinking of valuing agriculture over business, the second is the attitude towards foreign aliens, and the third should be the importance of science and technology, although there is no such term at this time, but Liu Yi and the utensils are imperceptibly the people of the Han Dynasty, and as the longest-standing talent with the Son of Heaven, Zhang Hu is undoubtedly the most deeply affected, His profound knowledge and excellent vision make him accept new knowledge more quickly than ordinary people, and the proposal of changing to a third-rate task at the level of a coach may not be able to attract enough attention, but Zhang Hu sees the extraordinary things about this proposal and can listen carefully to opinions.

In Liu Yi's eyes, Zhang Hu is an all-rounder in this era, and in the novels of his time, there are often characters who know everything about astronomy and geography, and most of them are fiction. But Zhang Hu changed his thoughts, such people also exist in reality, isn't Zhuge Liang in Romance? The same is true for Zhang Zicai, he not only has a good ability to accept the insights and theories that Liu Yi usually says beyond this era, but also can draw inferences, in fact, this is also reflected in Guo Jia, Chen Qun, Zhong Xuan and others, it is precisely because of their advanced theories that they can be used in this era, and Zhang Hu is even more credited.

Of course, if he wants to persuade Zhang Hu to adopt the third-rate conception of the method of breaking the city, it will definitely not work by just saying that the latter is not military at all, nor is he considering the problem from a tactical point of view, and the breaking of the city in his mind is to destroy the city wall of the dangerous Jiameng Pass, as long as the enemy's biggest reliance is gone, what can he defend? In the third-rate case, this was a large, well-thought-out experiment, and in Zhang Hu's mind, it was a feasible way to siege the city, but the two coincided in terms of results, and after a series of demonstrations, he also felt that this method was very feasible.

Zhang Liao, the commander of the Yanyun battalion, Zhang Xiu, the commander of the Chang'an battalion, and Ma Chao, the commander of the Sizhou battalion, asked to see the military division. Soon after Zhang He entered the account, the main generals of the Han army in Hanzhong also came together, and Ma Chao was seriously injured in the chase battle, and Pang De temporarily took his place in commanding the cavalry, and the Sizhou battalion also gave the Cao army great damage under his command, and in Zhang Hu's eyes, at least in the ability to command the cavalry, Pang Lingming was by no means inferior to any commander of the Han army's iron cavalry battalion, and he was a rare good general.

"Generals, come with me, I invite you to come today to discuss the method of capturing Jiameng Pass, Mr. Third, you can start." Seeing that the crowd was coming, Zhang Hu got up and led everyone to the open space behind the big tent, where there was a model that was almost exactly the same as the terrain of Jiameng Pass, but it was reduced by hundreds of times, and the military craftsmanship of the Han army was also fully reflected here, and the terrain of the entire battlefield was completely simulated.

"Strategists, generals, the villain is rude! Although this Jiameng Pass is a hundred times smaller can be stacked and poured method, it is unique, the villain can ensure that the solidity of these city walls will never be under the Jiameng Pass, and the materials taken are also restored one by one! Please take a look! Zhang Hu's last words were to the third gossip, and it would be more convincing for him to operate the way of the experiment, and the third rate was not stage frightened at this time, and pushed the wheelchair to the model and pointed to it.

The kind of confidence exuded by the third-rate body of the field that he is good at is obvious, and this kind of emotion can be felt by the generals from all walks of life from his words and actions, with the countless miraculous skills established by the Son of Heaven before the trip and the tools, they naturally have a respect for the third-rate craftsmen. With his words, someone sent a piece of Liu Lang paper to a person, which recorded the detailed pouring method of the model, don't think that Zhang Hezhang Xiu is a general who knows nothing about this, the way to build a city is one of the main subjects of the Youzhou Martial Academy.

Although it cannot be said that he is proficient in all the detailed steps recorded on it, but after carefully reading it, he will not doubt the sturdiness of the third-rate mouth, many of the processes and methods they have seen with their own eyes in the Youzhou Martial Academy. At this time, everyone's curiosity, including Zhang He, was aroused, what was the way to break the city that the military advisor said?

When the generals finished reading the Liu Lang paper in their hands and focused their eyes on the shrunken model of Jia Mengguan, the third-rate right hand waved, and the apprentices immediately began to practice many times, a dark and translucent liquid was poured on one of the city walls, and then the fire ignited for a while and was extremely fierce, the smell of this liquid is not unfamiliar to everyone, it is contained in the thunderbolt jar! At first, the liquid could produce such a violent combustion was an eye-opener for all the generals in the army, and the lord's knowledge was really profound, and as they continued to use it in war, they also knew the power of it.

The fire oil burned for a full two pillars of incense, during which the third rate did not make any movement, and the generals also waited patiently for the flame to be extinguished, although it was an experiment in front of them, but in the minds of the generals, it was combined with the reality of the battlefield at any time, with the sufficiency of the Han army's ordnance and military resources, it was possible to cause such a concentrated fire on a certain section of the city wall! Now the question is, for what is the purpose of the third-rate doing this? Can a fire still burn down the walls?

Time passed slowly, and the flames with black smoke gradually weakened, and at this time, many of the masonry on the city wall had taken on a dark red color due to the high temperature of the fire, which was a manifestation of the extremely high surface temperature. The next move of the apprentices also followed at this time, buckets of ice water were poured directly on the city wall that had just been roasted by high temperature, the thick white smoke accompanied by the sound of stabbing was endless, and the dark red on the surface of the city wall also disappeared, and after the white smoke dissipated, Zhang He, Zhang Xiu, Ma Chao and others also found that the city walls were different from before, they were no longer as smooth as before the fire, some were protruding and some fell into unevenness.

"Ladies and gentlemen, please see, this is a miniature sky-bombarding cannon made by our craftsmen overnight!" At this time, the third-rate apprentices also followed his words to take out more than a dozen much smaller bombardment cannons in the big wooden box, and began to use them to launch stones to attack the city wall after the rapid heat and cold, their operation was obviously not as skilled as the shooters of the equipment battalion, and many stones failed to hit the target accurately, but as the process progressed, the eyes of the generals lit up!

"I see, after the fire is boiled and the water is poured, the city wall will change like this!" Zhang Liao, the commander of the Yanyun Battalion, was the first to suddenly realize and speak, and everyone also nodded again and again, it turned out that under the bombardment of the Sky Cannon, there were obvious cracks on that section of the city wall, and it was accompanied by a small area of collapse! It turns out that this is the purpose of the military advisor to invite this craftsman here, if everything in front of him can be used in actual combat, can Xiongguan, which has lost the cover of the city wall, still block the impact of the elite of the Han army?

Zhang Liao immediately fell into deep thought after speaking, Zhang He and the others also had a general expression, Zicai saw this and bowed his head slightly and did not bother, he knew that this was the generals were thinking about the possibility of such an experiment in actual combat, as the commanders who personally participated in the attack on the front line, they undoubtedly had a better understanding of the actual situation on the battlefield, and they could also put forward more practical questions, and the brainstorming of the Han army was also based on how to solve these problems.

"With the power of our army's equipment battalion, there is no doubt that such a fire was caused, and the momentum may be greater, but what power should be borrowed from this method of pouring water later? Could it be ......" After a long time, Zhang He seemed to be talking to himself and seemed to be communicating with everyone, gathering a number of military equipment battalions can indeed cause such a fire, but watering may not be possible, after a pause, his face appeared mixed with doubts, his eyes first looked at the third-rate surface, and then turned to the military division.

"According to the weather officer, there should be a heavy snowfall in three days!" Facing everyone's inquiring gaze, Zhang Hu said unhurriedly, it is obvious that Zhang Junyi and others have thought of that, the Son of Heaven has a saying that generals should know astronomy and geography, but it is impossible to require every general to be as comprehensive as Mr. Zhuge and Zhang Hu and others, so the meteorological officer has also become a new configuration in the army, and the instructor of this main course in the Youzhou Martial Arts Academy is Wang Xi, the director of Qintianjian.

"Generals, please take a look, this is the water cannon mentioned by His Majesty back then, and the palace of the capital and the Flying Tiger Army have been equipped on the warships, and the generals should have seen it." Zhang Hu said a word for the public to solve the doubts, the third rate also let the apprentices for the public to present drawings, and a real appliance also appeared in front of everyone, it is the water wheel designed in the capital for fire prevention, in the case of manpower operation, his water column can shoot out several zhang away, everyone has seen its operation back then, but never thought that this kind of fire-fighting thing can also play a miraculous effect in the battle of Hanzhong related to the overall situation, with this thing can make up for the lack of heavy snow!