In the ancient Chinese military system, there is a very clear understanding, that is, the larger the city, the stronger the protection ability, in fact, to put it bluntly, the bigger the city, the money can provide enough city defense, it is the city defense that can resist the higher enemy army, not the bigger the city, the more powerful. Pen & Fun & Pavilion www.biquge.info

The main function of the city wall is that in the same area, the city can invest more troops, and it is enough to ensure sufficient security.

The walls of small cities are smaller, and under the parallel positions, it is easy to be attacked by the enemy with concentrated forces, while the walls of large cities are vast and hierarchical, and the defense intensity is higher, and often there will be more garrisons, which is also the root cause of the strong defense of large cities.

Most of the ancient city walls are the most primitive, without much scientific and technological content, the reason is very simple, China's such city walls are enough, and the city must also assume the role of the central node, so as to be able to connect more areas and ensure the control and prosperity of a certain area.

The castle in the West and Europe is completely a military building, this thing is specially for the military, for the existence of war, there is no castle, or there are very few civilians, even in the war stage, there are very few civilians to enter the castle, they are stationed with fewer personnel, the solidity is higher, and it is difficult for the army with more than ten times the defender to capture the fortified castle, and even in the fourteenth and fifteenth century, the fortress was invented.

This fortress, which may have garrisoned a maximum of a few hundred people, can withstand the attack of tens of thousands of people, creating a great miracle in military history, and he can say that it has increased its utility to the extreme.

To put it bluntly, the advantage of the area, every attacking enemy, will be attacked at least 3 times or even more, even if there is a gap in strength, 3 people fight 1 person, can also win, not to mention the tall city wall of the fortress, less than fifteen or sixteen meters, more than 20 meters tall city wall, has become a nightmare for any attacker, five or six meters of arch back, it is enough to make people collapse, along the ladder, every step up, is the line of death, desperately rush to the city wall, to be able to conquer the city.

On the basis of the original, if it is increased by two or three times at once, the danger will be greater, the mortality rate will be higher, and it is easy to make people despair.

In addition to the layout of the city wall, the fortress has taken all aspects of the military to the extreme, and under the fortress, each floor, there is a not very large gap, about the size of a bowl.

There are a lot of such gaps, one every two or three meters, and they usually have a breathable function, but after the war comes, with the special push rod, the ladder can be pushed away.

Hiding in the fully protected house to push, and braving the rain of bullets, pushing above the city wall, the difference in the middle is not ordinarily large, these spaces have been specially set up, small inside, large outside, not easy to attack, but can push out bamboo poles,

Here we have to talk about the height of the fortress, the ordinary city wall of the Northern Song Dynasty, 6 meters high, in the middle, falling down on the city wall, as long as it is not particularly unlucky, it will not die, and even most of the injuries are difficult.

This height increases to 15 meters, or even 20 meters, 2 times more, or even 3 or 4 times the height, and if you come down, you will die, and you will get some stone lumps below, all kinds of bits and pieces, it can be said that there are pits everywhere.

Even if these don't exist, let's just say that the simple comparison, the meaning of attacking 6 meters on the back and attacking 20 meters on the back is not the same, the archers are more obvious, their range is increased by at least a few tens of meters, under the same premise, enough to suppress the opponent's archers.

Fortresses armed to the teeth are at most less than 150 meters in circumference, and some miniaturized fortresses are even only 100 meters or even 80 meters in circumference.

Even if there are 3 people standing on each meter, a circumference of 150 meters, and a maximum of 450 people, even if it is an army of one million, only the group of people on the front line and the follow-up archers can come in handy, but the fortress can have three times or even four times the number of personnel in the same area through a unique design and hierarchical arrangement, which forms a local advantage, and the most central fortress also has a special place for archery.

Under the premise of the same kind of bow, 20 meters in height, it is enough to completely suppress the field, not to mention the range of Changgong, which is much higher than that of ordinary bows and arrows, this is simply a nightmare, even if there are many people, they can only be sent to death in batches, and even if you send 450 people, there are very few people who can really come up with dogs, even if they use fatigue tactics, as long as the fortress has three times, or even four times as many people, taking turns on duty, there is no shortage of internal food and weapons and morale, it is impossible to be breached.

This can be said that the fortress can resist the root of tens of thousands of troops with hundreds of people, although in terms of absolute numbers, the army outside must be above the fortress, even dozens of times, hundreds of times, but in the area that can be invested, the fortress occupies an absolute advantage, at least more than 2 times, coupled with the layout and defense of the fortress itself, it is almost impossible to storm and capture such a fortress.

If the war is just a game, then this fortress still has the possibility of being breached, after all, even if it is 100:1, the defenders in the fortress are limited, but the real war is not a number game, in the face of such an iron lump, costing huge sacrifices, there is no way to break the fortress, siege is the only way, at most a few days of onslaught, after killing thousands of people, it will stop, it is impossible to attack and exchange endlessly, that will make morale completely collapse

Under the premise that there is a chance to win, or even fight against each other, it is possible that the soldiers of the sea will come up to attack with military orders, but 500 or 1,000 people will die, and even the opponent's defense will not be breached, and under the premise that they don't know how many people will die, what will be the final result, no one will carry out such a task that will inevitably send them to death, even if it is Yue Fei's Yue family army.

It can be said unceremoniously that before the advent of heavy artillery, the well-built fortress is an insurmountable fortress, and even some excavation engineering methods, they are at most likely to capture the fortress, if the two sides have the same or similar mobile forces, Party B can put the siege of Lingbao on the other side, and before the attack, support the defenders of the fortress, whether it is to change the details of the attack weakly, or to cut off his grain route, these can be chosen, so Lingbao is an excellent tactical fortress, It's almost impossible to break, and that's the source of the bastion's fear.

The fortress is very powerful, Zhao Xin also knows some of the layout principles of the fortress, he does not have a detailed design drawing, but he knows the design concept of the fortress, with a concave arc, quadrilateral, or triangular, to increase the length of the defenders, itself, the side length of the straight line may only be 80 meters, after adding these, it will increase to 160 meters, or even 240 meters.

Reduced the length of the opposite side, and increased the height, with three-dimensional to increase the sense of hierarchy, on top of a layer of fortresses, add a layer, layer by layer, after superimposing, the formation of the superior forces in the area, and the enemy attacks from the bottom up, they can't, can't stack more, and even because of the division of the fortress terrain, they can't attack from the edge of the fortress, they can only attack from the groove, not to mention the strength of the level, even the strength of the groove itself, is twice as much as the attacker.

Find an architect and explore, you should be able to get the construction method of the fortress, but to quickly make the fortress shaped, brick and cement, is an inevitable choice, otherwise, just build a castle of giant stones, not a small Miao Jiazhuang can afford, even if it is the card system he has, it is no exception.