Korea and Japan also have a long history, history can be traced back to one or two thousand years ago, and because of their proximity to China, they have been connected with China for a long time, and the two sides are very closely connected with each other, and there are different independent countries.

Among them, Korea was a combination of hostility and dependence, as early as the Han and Tang dynasties, there were records of the monarchs of the Central Plains conquering Goryeo, and even the Sui Dynasty and the Tang Dynasty were all declining because of the expedition to Goryeo.

Japan was much better, because it was separated by a strait, and it would be difficult for China, the empire of the mainland, to conquer him.

However, this point has been changed after the emergence of the Dinghai Navy, not to mention a large number of Western-style warships suitable for the premise of high sea conditions, even if a large number of Chinese-style sailing ships are mobilized, they can attack Japan.

Kaesong and Heiankyo, which are currently the capitals of Japan and Korea, and are also the most densely populated places, have become the focus of naval attacks at present, with only one purpose, that is, to plunder the population.

Japan and North Korea, one is an island country, the other is a peninsular country, but the population is about the same, in this era, North Korea is a little more, backed by the mainland, planting technology and some other technologies are slightly higher, the population is also a little larger, between 7 million and 8 million.

From a very early stage, Korea was relatively strong here, and even took advantage of the weakness of the Central Plains Dynasty to attack the Central Plains Dynasty, the former Sui Dynasty, because of the expedition to Goryeo, ultimately failed, lost the national fortune, the Tang Dynasty, also had an expedition to Goryeo.

Under the premise of no large-scale sea-crossing operations, the expedition to Goryeo could only go north, and the place where China bordered Korea in later generations was the Yalu River and some mountain ranges, and the mountainous terrain in the north of Korea made it difficult to break through here, easy to defend and difficult to attack, which was also the foundation for North Korea to be able to resist China's attack with a projectile land.

Relatively speaking, North Korea, which is closer to China and more heavily influenced by China, has a much larger population, while Japan has a slightly smaller population of more than 6 million.

As the capital of two countries, Kaesong in North Korea and Kyoto in Japan are both densely populated places.

In this era, the Northern Song Dynasty was the most powerful country in the world, although militarily, the Northern Song Dynasty has always been pressed and beaten by the Liao State, but in the face of the brilliant civilization, huge cities, and rich and intoxicating wealth, the most eye-catching in the whole of East Asia is the Northern Song Dynasty.

Both Japan and Korea recognized the status of the Northern Song Dynasty, and even later, when the Northern Song Dynasty fell, neither Japan nor Korea recognized the status of the Jin State and Mongolia as Zhengshuo.

These two countries, not only in terms of language and writing, have been influenced by the Chinese circle of the Northern Song Dynasty, but also, naturally, in the direction of construction.

Bianliang in the Northern Song Dynasty and Lin'an in the Southern Song Dynasty were definitely super metropolises in this era, with a population of one million, the entire population of some small countries, that is, so much.

Crazy to learn all the Northern Song Dynasty Japan and Korea, in the construction of the capital, also refer to the Northern Song Dynasty, big cities have also become the direction of development, maybe in other cities, and the Northern Song Dynasty is far away, but the capital is also a huge city with a population of more than 300,000.

The capital city has a large population and must be supported by the surrounding areas, and in the Gyeonggi area, there is a population of at least 1.2 million to 1.5 million.

These two countries, with their large number of armies, could not withstand the attack of the Jurchens.

Whether it is North Korea or Japan, it is very far away from Liao, and in the place where Korea borders Liao, it is the territory of the Jurchens, and in the same way, the trajectory of Jurchen activities is not only on land, but also on the sea.

In the 11th century, there were records in the historical materials of the two countries that the Jurchens attacked, but basically, they were successfully passed.

This also shows that the armies of North Korea and Japan have considerable combat effectiveness, but it is a pity that what they encounter is a terrible navy armed to the teeth.

Even the Jurchen warriors, in front of the Dinghai Navy, are not good, let alone the weaker Korea and Japan, for the Dinghai Navy, victory is already a sure thing, the most difficult thing is to find a suitable position, and as much as possible to plunder enough people.

Perhaps, near the two capitals, more than a million people, even if they are plundered by crossbows, will not play an absolute role in the growth of the population of the Dinghai Navy, but they supplement the most lacking place, a supplement to the Dinghai Navy, which has been continuously losing blood.

Relying on natural growth, more than 2.8 million people can be born every year, but this part of the population is at least within 15 years.

15 years later, with the rapid growth of the population, the new population has reached adulthood, and after more than ten years of education in the Dingjun, they have become high-quality talents, plundering these lowest levels of manpower, and it will not have much effect.

However, in this era, even the high-quality talents of the Dinghai Navy itself are only a semi-finished product that has gone through several years of education at most, even if they do not understand the language, even if they are of different races, as long as they are reasonably applied, there are places where they can pay, and they can contribute to the Dinghai Navy.

Under the fast pace of the navy, from the end of June to the end of June, the troops were decided to be dispatched, and they arrived in July, landing on Korea and Japan on July 12 and July 16 respectively.

On July 12, in the sea near Kaesong, North Korea, the huge fleet could not see the end, and near the harbor, there were some fishermen, who went to the sea to fish, but unfortunately these fishing boats were controlled.

Landing is dangerous at any time, and if you are not careful, it is easy to be set on fire, and you can come suddenly without giving them time to reflect, which is very critical to the safety of landing.

In this era, there is no sea power, and even a few hundred years later, the Japanese who poison the entire Jiangnan have not yet appeared, and the technical indicators of the ship have not reached a certain level, and the sea is insurmountable.

The emergence of Zhao Xin, not inferior to the science and technology of the Northern Song Dynasty in this era, fell on the head of the Northern Song Dynasty, and the emergence of large sea ships that could cross the turbulent sea like flat land, Japan and Korea, which have always been cited as a barrier to the sea and the mountains in the north, became an ornament, on the seaside of the waist of the Korean Peninsula, from here to Kaesong, only a day or two away.

The first landing did not take much time at all, and in just half a day, at least 10,000 troops landed on the landing.

The most dangerous time has passed, and at the time of landing, perhaps naval artillery can help, but if the North Koreans have prepared for an attack regardless of the cost, they can still inflict great losses on the given navy.

In terms of technology and weaponry, the casualty rate of the Dinghai Navy's large-scale operations was very low, spanning more than a year

The Dinghai Navy did not attack Huanglong, but landed separately, not to destroy Korea or Japan, but to obtain their population to ensure the Ding's navy's labor requirements.

The 100,000-strong army, divided into at least 6 parts, landed at a relatively 20-kilometer point respectively, and then the two main attacking troops, almost 20,000 people, moved forward in the direction of Kaesong, and the rest were guarded around to guard against the fleeing people.

The next action, it was much simpler, blitzkrieg, with the help of powerful artillery, opened the city defense, firearms troops and a large number of artillery, so that North Korea, which was still out of the initial era of cold weapons, saw the market, to a certain extent, they had never seen such an attack at all, some similar to a massacre-like attack, even if it was able to prepare, the team that rushed up was also scattered in an instant. Not to mention, the North Korean army, which was not at all aware of the danger that was coming.

Kaesong lasted less than half a day, then fell, with artillery, especially the heavy artillery that can siege the city, using a large number of armor-piercing shells and heavy shells, can easily penetrate the city defense, the original need to bury a large number of explosives, and even take more than half a month, dig a tunnel, to the bottom of the city wall, to be able to ignite these explosives, blow up the city defense.

However, after adjustment, the siege cannon that does not take into account the lethality and focuses on the destructive power of the siege gun, as long as it is 500 steps away from the city wall, it can continue to attack the city wall, whether it is a streamlined body or a heavy ball that destroys the city wall, which has a greater destructive effect on reinforced concrete fortifications.

Although the effect alone may not be greater than that of explosives buried in tunnels, the speed and continuous destructive effect are much higher than those of explosives, and they are very convenient.

The city wall of North Korea Kaicheng is also a heroic city, after several generations of efforts, it has been quite large, even compared to some heroic cities in the Northern Song Dynasty, it is not much worse, but it is a pity that it ran into the Dinghai Navy that did not play cards according to common sense.

Armor-piercing bullets and heavy destruction bullets, even on reinforced concrete city walls, have a relatively large destructive effect, not to mention ordinary brick and wood structures, Kaesong's city walls, learn to look the same, but in fact, under the powerful offensive of the Dinghai Navy, it is impossible to resist at all.

After more than a quarter of an hour of attack by 40 artillery pieces, more than 400 armor-piercing shells and more than 80 heavy sabotage shells were fired.

Armor-piercing bullets, as long as they hit the city wall, at least they can penetrate one or two meters deep into the city wall, a large number of armor-piercing bullets destroyed the huge city wall, and then the heavy destruction bullet smashed heavily on the city wall, destroying the structure of the city wall, after a quarter of an hour, a city wall can no longer hold on, with a bang, it fell, and there was a gap more than ten meters long.

Of course, the defenders were not willing to be defeated, and a large number of troops began to gather at the gap, but they fell into the hands of the Dinghai navy, and a large number of artillery began to concentrate on attacking the gap part, and suddenly the bombardment of hundreds of cannons immediately turned any place into a hell.

This process continued, and by the time the gap appeared in the third round, no one dared to reach the gap, and then it was time to enter the gap, expand the number and area of entry, and finally successfully capture part of Kaesong.

The old-style city wall, a little city wall is breached, which means that it is at an absolute disadvantage, after a part of the city wall is breached, there are almost only a handful of cases that can defend the city, and most of them are defeated.

In itself, in terms of field combat capabilities, the Dinghai Navy is far above North Korea, not to mention the artillery to help, after breaking through the city wall, in less than half a day, the entire Kaesong has been free of war, and after that, 2 days later, the entire Gyeonggi area will be free of war.

A few days later, the same thing happened in Kyoto, Japan, except that Kyoto was closer to the sea than Kaesong, and the speed was much faster, and the battle ended in less than 2 days.

If you simply deal with Japan and North Korea, let alone 100,000 troops, I'm afraid, 5,000 troops will be about the same, this is not a simple difference in combat effectiveness, it is a huge difference caused by the generation difference in weapons, which cannot be made up by individuals and numbers.

Just like the Opium War, although the British army used tens of thousands of people, but the vast majority of them were navy, with the help of the navy's incomparably strong combat effectiveness, the British army only used about 3,000 ground forces to sweep the entire Qing army, and finally won the victory of the Opium War, with few casualties.

In terms of combat effectiveness, the combat effectiveness of the navy is no longer weaker than that of the British army during the Opium War, and it is even stronger.

This is stronger in several aspects, in terms of weapons, the navy's musket has gone through the level of front-loading guns and flintlock guns, and it is already a weapon of rear-loading paper shell bullets, although it is said that the metal fixed ammunition has been completed, but the metal fixed ammunition will take at least a few months or even longer from the completion to the commissioning into use. But even so, it was higher than during the Opium War in 1840.

Most critically, gunpowder. Yellow gunpowder, and even more intense gunpowder, was invented decades later, in the time of Nolbay.

Dinghai did not have this problem, at the beginning of Zhao Xin, after solving the perfect black powder, nitrocellulose, gunpowder with higher explosive power began to appear, in terms of the power of gunpowder, round higher.

Coupled with the production and quality of steel, the quality and power of artillery were much higher than those of the British army of that era.

Correspondingly, the Qing army, even if there are too many deficiencies, but a large number of batteries, as well as the existence of coastal defense, so that the Qing army is not unable to counterattack, this combat effectiveness is relatively higher than the Northern Song Dynasty and Liao army in this era, not to mention Japan and Korea.

If it is purely to destroy two countries, let alone 100,000 troops, a few thousand people will be enough to destroy them, their army, how many are to deliver food, even 50,000 people, 100,000 people gathered together, may not be able to defeat the 5,000 people of the Dinghai Navy, but 5,000 people, the attack is okay, the defense and arrest people, it will not work, 100,000 at once, but also to solve the problem once and for all.

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