Wars have existed a long time ago, primitive societies in order to compete for food and daily necessities, the Spring and Autumn period pay attention to etiquette, war is like a joke. In the Warring States, it is different, everyone wants to seize more cities and expand the land of their own country, but I don't know if anyone has found that there are often long-term attacks in costume TV dramas, but they will still stubbornly launch an attack, why don't they go around directly?
In ancient times, a city pool often referred to the city wall and moat, also known as the city. It was built to protect the people and resist the outside world, and the ranks were also very different, and the higher the level, the larger the scale. In addition to serving as a defensive function, the city walls also had the role of defining the scope of the city. In the early days, it was mainly made of bamboo and wooden fences, which did not have to be fought at all, and there was no war in that period. After a certain level, it became built of earth and stone, and there will be single and multiple eaves above the city gate, so that the defenders of the city can better observe the enemy situation and command the battle.
The number of gates is also determined by the size, and the larger the gate, the more it is. Generally speaking, there are eight gates in the capital city and only four in the county seat. Some of them also set up forts in places such as corners, but now because they are different from the urban plan, the city is basically demolished. Before the Ming Dynasty, the city walls were all built of earth, so they were all yellow and yellow.
This kind of city is actually not very familiar, and it is easy to collapse when it rains. In order to be more solid, they worked hard to thicken and heighten, so the capital of the Chu Kingdom was 14 meters thick. In addition, there is a moat, which is dug out around the city wall to prevent others from coming in. According to historical records, the length of the Xiangyang moat is 5060 meters, the width is 250 meters, and the average width is 180 meters.
And according to historical records, in the Spring and Autumn Period, the city already had more than a moat and a city wall, and an urn city, which is to build a small city outside the city gate, which can only be used by large cities, and the role is specially used to protect the city gate. In addition, what is done well is the three-dimensional city defense pattern composed of horse noodles, enemy towers, and corner towers. The city is basically impossible to attack, so it is relatively easy to hold on to the grain in the city.
Like the Battle of Changping, when Lianpo fought, the method of sticking to the ground was used, and in the fifty-fifth year of the Zhou Dynasty (260 BC), Qin would launch an attack on the Zhao state in Changping. Lian Po couldn't see that he could not fight, so he hid in the city and built a wall without doing anything. The State of Qin has been fighting, and the State of Zhao has been cultivating, and it will not go out to meet the battle. The State of Qin was annoyed by Lian Po, but instead of bypassing the rear, he used other tactics to attack the State of Zhao.
Why don't they go around the back? Because it is the same around the past, as mentioned earlier, the general city has four gates. No matter where you go, you will see the city gate, and if you have a large number of troops, you can only trap the people in the city. But the premise of this is that the attacking side also consumes energy, and they have enough food and grass for them to consume. The army is out for a day, and the consumption is not a little bit.
The consumption is enormous, and ancient cars and horses are not as fast as modern cars. If the city is large enough, it will take a long time for the army to get around, which is not cost-effective and will cause the soldiers to march for too long and tired. If the attacking side is not strong enough, when the people in the city move to the rear to attack, they will take the opportunity to counterattack, and at this time, they will not be able to fight. The ancients must have thought of attacking the rear, and perhaps some people have failed. Therefore, with the lessons of the predecessors, the future generations will naturally not use this trick again.
References: Historian's Cafe, City Pool