Chapter 273: The Battle of Runan

Liu Hou led the Hong army to Runan, but Cao Xiu closed the city gate and refused to come out to fight. However, the free stop sign is only a sacred object in Zài's novel, and a wooden sign may block the attack of the army. Liu Hou ordered part of the army to camp and part of the army to immediately begin the attack.

Now the Shu army is strong and strong, and there are many more people than the Wei army defending the city, so naturally there is no need for all of them to go to the field, only a part of the troops needs to be sent to crush the Wei army. In fact, according to the attack routine of the Hong Army, the first to enter the field must be a long-range firepower unit.

Now that the supply of ammunition is sufficient, Liu Hou does not need to use it sparingly, and it is naturally very cool to fight, Liu Hou let the Keqiu Killing Force and the Angry Birds Force all display under the city, looking like a luxurious lineup.

Of course, the so-called display city is actually far away from the city wall, because the hot air balloon has been detected, there are at least a dozen bed crossbows on the city wall, this thing has a long range and is very powerful, so it has to be guarded against. At this distance, Keqiu Kill can be used, but Angry Birds can't, and it is just a strong voice.

The Keqiu killing troops methodically loaded, aimed, and ignited -- the fireworks display began. Rockets whistled and flew towards the city gate and city wall on the north side of Runan City, and the Wei soldiers on the city wall were suddenly blown up. Liu Hou watched the launch of Keqiu Kill with a telescope, and said to the courtiers around him: "It's a pity that most of the rockets hit the city wall and were wasted. ”

For an important city like Runan, the regulation of the city wall is quite high, the wall is 10~14 meters high, the upper width is 5~9 meters, and the lower width is 7~12 meters. The city wall is a brick and earth structure, with a rammed earth layer in the middle and a large blue brick on the outside. Such a thick city wall, not to mention rocket artillery, even if it is moved, it is impossible to knock it down even if the largest fire ~ artillery of the Shu army is moved.

When the cannonball hits the city wall, even if it can smash the green bricks on the surface, the kinetic energy is absorbed by the thick layer of rammed earth. Therefore, the kind of novel that says that the city wall is collapsed with fire ~ artillery is either to blow the atmosphere, or those city walls only have two thin layers, and there is no rammed earth layer between the inner and outer two layers of wall tiles.

If you want to destroy the city wall, with the current equipment of the Shu army, you can only bury a large amount of black fire ~ medicine at the root of the city wall to win by quantity. Of course, the kind of cannon in later generations used a ladder ~ en ~ ladder for explosives ~ medicine, which was much more powerful than the black fire ~ medicine, which was another matter, but now the Shu army does not have it.

Hearing the emperor's exclamation, Guo Youzhi next to him answered: "Your Majesty, the accuracy of the rocket is indeed a little worse, and the impact is not enough, the damage to the city wall is not great, and it is indeed a waste to use it to attack the city." It is better to deal with this kind of tall and thick city wall or fire ~ artillery.

The accuracy of the fire ~ cannon is much higher, and if you aim well, you can hit the shells in the same place every time, so that it is easier to collapse the city wall. ”

"I'm afraid that the fire ~ cannon can't collapse such a thick city wall, oh, not necessarily, maybe build a super cannon and fire ~ out~ cannonballs the size of a bucket can do it, but how can you pull such a big cannon to the front line." Liu Hou said helplessly.

"Your Majesty is right, although the impact of fire ~ artillery is stronger than that of rockets, it also depends on the caliber. If the caliber is too small, it will not do anything, and if the caliber is too large, it will be too bulky and difficult to move. Therefore, fire ~ artillery also has both advantages and disadvantages, the key is to see whether the advantages outweigh the disadvantages or the disadvantages outweigh the advantages. Deng Zhi echoed Liu Houdao.

"Well, the gun~ cannon is more suitable for loading a fixed turret, as a guard, such as on a city wall, or on a battleship. In these places where there is no need to move, the fire ~ cannon can be made very large, and they can give full play to their advantages of high power, long range and high accuracy. The accuracy of rocket artillery is not high, it can only be used for covering strikes, it is a waste of ammunition, its main advantage is that it is easy to carry, suitable for field combat, especially suitable for those who need to take some rugged mountain roads and go to some places where guns ~ artillery cannot go to fight. Liu Houdao.

"It would be nice if the roads here were like the roads of the Ministry of Industry, hard and smooth. Now Chengdu already has four-wheeled carriages drawn by four, six or even eight horses. If you put steel wheels on these cannons, and use the same method as a four-wheeled carriage, and use six or eight horses to pull them, you will definitely be able to pull them on the concrete road. "Guo Youzhi.

With the development of technology, bearings and shock absorbing springs are getting better and better, and the four-wheeled carriage is becoming more and more comfortable. And Liu Hou knew that the four-wheeled carriage was not so simple at all, in addition to the different methods of setting the horse, the key was the steering device. In the past, horse-drawn carriages were all two-wheeled, the main reason was that there was no steering device, and the carriage could only be dragged directly by horses, so that its wheels slid to achieve steering.

Under the prompting of Liu Hou, the craftsmen of the "Ministry of Industry" finally made the steering equipment, so the appearance of the four-wheeled carriage was a matter of course. In fact, ancient China was not without four-wheeled carriages, in the early Spring and Autumn Qin cemetery excavated copper four-wheeled car models, and even some emperors had six-wheeled carriages in their tombs.

In this way, it is not that ancient China could not build four-wheeled carriages, but four-wheeled carriages were generally used as hearses for kings. Four-wheeled carriages are rarely used by the people, and ordinary craftsmen do not make four-wheeled carriages. In fact, this thing is not very difficult in terms of technology, and with a slight hint from Liu Hou, the craftsmen can break through the technical bottleneck and build a four-wheeled carriage.

"Mr. Guo's proposal is good, but we have to wait until this war is over, when the world is calmed down and we have the spare strength, and then we can build concrete roads across the country. At that time, there will be a cement-paved gallop road between each county, and the fire ~ artillery will go wherever it wants. Liu Houdao.

It's a pity that when he heard the words of the little emperor, Guo Youzhi was discouraged, the reason is very simple, after the war is over and the world is unified, what is the use of fire ~ artillery? At that time, no matter how well the road is repaired, no matter how strong the maneuverability of the gun ~ cannon is, it will be useless.

And although Liu Hou looked full of ambition and said some exciting words, he knew in his heart that this was just his own YY, and it was estimated that he would die in this life, and it would be impossible to see all the counties in the country connected to each other. The reason is also very simple, even in the later generations of Liu Hou's life, with the productivity of that era, there were so many mechanized and electrified tools, and after decades of road construction, it has not been able to make every county have a highway.

What's more, now is the era of the Three Kingdoms when the productivity is extremely backward, in this era of road construction is basically hand-based, building a road almost requires the requisition of all the labor force in a county to succeed, in this case, to be able to connect the various state capitals with gallops, I don't know that it can only be achieved in the Year of the Monkey, let alone repair to the counties and counties.