In ancient times, when the moat froze in winter, was it useless to defend against foreign enemies?

Moat. Freezing does not necessarily have the effect of defending against foreign enemies, sometimes the protection and freezing will bring unexpected results, I remember learning in that book, there is an old man who took advantage of the moat to form thin ice.

Then, when the enemy arrives, they will smash the surface of the river and let the enemy who cannot regain it fall into the icy river water and die a heavy death, which also shocks the enemy's psychology. The moat is actually basically useless in a large battle, because the road is high and the magic is high, and the enemy will have a way, and you haven't seen a famous battle with a lot about the moat, right? Often by surprise, the enemy will fall into the pit unprepared to achieve good results.

And the structure of the moat was basically absent in the general small cities in ancient times, but only in the central cities, and some were still very small, because there were not many rivers in the city that could be transformed, and after all, it was a big project to build a canal artificially and divert other water into the canal.

North of the Huai River in China's Qinling Mountains, the river freezes in winter. In the south, there is little freezing of rivers. In addition, the structure of the moat belongs to the width of the river, the steepness of the embankment, and the depth of the water, so even if the weather is too cold and accidentally freezes, the moat is not easy to survive.

Secondly, the most important point is that the moat leads to living water, and the water is flowing, so as long as it is not extreme weather, it generally does not freeze.

Again, the ancients also had some anti-freezing and anti-freezing methods, such as adding some substances to the river water, it is said that some medicines refined by Danshi will be added, these substances will decompose in the water, and the decomposition will release heat at the same time, and the temperature of the river water will be relatively high, and it is not easy to freeze.

Hope it be, thank you.

Yes. It is frozen, and if it is thick, it is easy for foreign enemies to invade and there is no obstruction.

Yes, but the ice is thin, and not all of it freezes.

It is a bridge section of Yang Yanzhao's defense against foreign enemies in the Yang family's legendary hall.

Taking advantage of the cold weather, he sent people to pour water from the city wall overnight, and the second day was frozen in the sleepy day.

The enemy will not be able to climb up the brigade.

Ice, as if starring Yu Bo in [Water Moon Cave Sky].

Yes, many rivers and lakes in the park will freeze.

However, some of the ice is not thick, especially moats, etc., so you can't walk on them to prevent danger.

The walls are used to prevent the invasion of enemies, and they can also be used to prevent the invasion of wild beasts, so that the people of the city will not be harmed, and they can also show the strength of the city and the wealth of the people. The moat can give a kind of protection to the people in the city, and it can also be used to fight fires when there is anything in the city, and it can also provide water resources for the people and the people at home, and it can also play a great defense when the enemy invades, and it is also a good scenery of the castle.

In order to defend against the enemy's attack, it plays the role of dodging and attacking, which is of great help in resisting sudden enemies.

Defending against foreign invasions, walls and moats prevent direct enemy contact with civilians.

In peacetime, the walls could be used to set up gates to collect taxes. to prevent theft. The moat prevents the wall from climbing. Protect the bricks on the walls from being removed.

Periods of war can be used for garrison.

It also facilitates transportation and strengthens defense capabilities.

The main thing is its defensive role.

In ancient times, it was the age of cold weapons, there were no guns and the like, and the best bows and crossbows generally had an effective range of 1,800 steps. Therefore, there is a protective wall, and the moat plays a very strong defensive role. Most of the walls are defended, such as rolling wood thunder stones.

Moreover, the castle tower is also used as a powerful tool to transmit signals, and the water of the moat is still the domestic water of the residents in the city, so most of the water in the moat is living water, which is also the reason why most of the ancient big cities were formed by the main rivers. For example, in ancient times, there were many examples of besieging cities and winning without cutting off their water sources.

Emphasis is placed on military defense, for watering.

Hello, first of all, the city wall is to demarcate the boundaries and resist the invasion of foreign enemies, the city wall is also a place where the ruler can land for a long time, you can look at the dynamics of many places in a radius, as for the moat, it is nothing more than the role of the natural barrier, the only way to cross the river is the bridge, there is a river block, for the ancient science and technology, the technical level, it must be a little difficult to cross the river, in a long time as there is a person to check, it is difficult to enter, which forms the best self-protection of a barrier.

1. Defend against the enemy in wartime.

Second, it is convenient for the managers at that time to manage the people.

3. The water in the moat can be used to fight fires and raise fish.

Like the rooster singing at dawn.

Leap again and again, gallop again and again, you finally stand as an oriental giant.

We have grown on your shoulders for 5,000 years, so we have carved 5,000 years of unchanged "diligence" in our temperament.

5,000 years, you are still full of youth, 5,000 years, you are still excited.

We have followed your footsteps for 5,000 years, and we have witnessed your 5,000 years of vicissitudes.

You were once confused, you were once low, but in 1949 the roar of the nation shook the world;

A spring thunder in 1978 opened the door to the world.

On your vast and beautiful prairie, the sheep are like pearls sprinkled with green velvet;

In your fields of hope, waves of wheat have dyed the heavens and the earth golden.

On your winding shore, a tail of fresh fish fills your nets;

In your lush forest, the future pillars of your country are everywhere.

When the bell of the new century rings, the eyes of the world are on you.

I saw the fruit of the harvest bending the branches;

I saw that the machine was spinning freely and merrily.

I saw satellites and spaceships shining with the sun's rays;

I saw that the genetic code led us into the temple of natural science.

We have ushered in a colorful era with you, and we have stepped into a new and brilliant era with you.

We know that our shoulders will carry your hope for tomorrow;

We know that our hands will create your future glory. Motherland,

You can think about whether if the enemy army comes to attack the city in the era of cold weapons, there is a river between the enemy and the city, which will cause a lot of trouble for the other party, so add a high city wall. So as I said upstairs, it plays a protective role in the city, but I think it can reflect a not very open subconscious of Chinese people from the side.

Mainly used for city defense.

A castle wall is an obstacle structure built around the capital by the farming people in the old days to cope with the war, using materials such as civil engineering and masonry.

The castle is surrounded by a wide and deep river, and there is a suspension bridge that can be raised and lowered at any time at the gate of the castle. As soon as the drawbridge was raised, access to and from the city was cut off.

First of all, there is a military defense system, mainly military defense, lookout, and so on.

Of course, it's protection.

Moat, just listen to the name and know what to do.

In the pre-Qin period, people used natural ice to refrigerate, keep food fresh, and make cold drinks.

According to the records of "Zhou Li", at that time, in order to ensure the use of ice cubes in summer, the Zhou royal family set up a corresponding agency to manage the "ice administration", and the person in charge was called "Lingren". The establishment of this department is not small, with a total of 80 "employees". Generally from December every winter, workers begin to take natural ice and transport it to an ice cellar called "Lingyin" for storage.

Judging from the archaeological finds, the home ice storage room is a symbol of the status and status of the ancients. Liu Wu, the king of Liang Xiao in the Western Han Dynasty, was buried in Mangdang Mountain in present-day Yongcheng County, Henan. The tomb is quite luxurious, with a "bathroom" and an ice cellar.

Probably Liu Wu was afraid of heat, and he was used to enjoying it before he died, and he also had to "eat cold drinks" after death.

At that time, Zeng Guofan defeated the Taiping Heavenly Kingdom, holding the military and political power of the Hunan army, the power leaned towards the government and the opposition, the Empress Dowager Cixi and other Manchu nobles were suspicious, and their worries also rose, and their merits were high, and he was also a political old oilman, and he put the power of the Hunan army in an instant, and ran to the court to ask for a reward, and Mingzhe to protect himself! So it's not that he doesn't fight, it's that he's more afraid that the court will cut him. But he went to defend against foreign enemies, do you think the corrupt and incompetent Qing ** can beat the strong ships and cannons of the West?

Don't cut the land and pay reparations when the time comes.

When Zeng Guofan was the governor of Zhili, there was a "Tianjin Teaching Case", and he dealt with the aftermath in the form of losing power and humiliating the country, and then he was transferred to the governor of Liangjiang and died in office.

It is believed that he was deeply aware of the huge power gap between China and the foreign powers, and feared that it would lead to international disputes and even worse consequences of war. It should be said that his concerns are well-founded, and the burning of the Old Summer Palace a few years ago is still vivid. The world's military has shifted from the era of cold weapons to the decisive battle of hot weapons, and China is still keen on the archery of the children of the Eight Banners, this gap is not something that Zeng Guofan can eliminate personally, although he opened the door to China's modernization.

I know that Qi Jiguang [Fight against the Japanese Invaders] Zuo Zongtang recovered Yili.