If the trend of history does not change, technically speaking, the technical reasons for the death of the Southern Song Dynasty to the Tatar bandit group are mainly in the naval army and the return artillery. Pen fun and pavilion www.biquge.info

Pure Tatars would never know how to fight in water, and technical tasks such as sailing a ship would not be true to them.

However, it was the northern Han people such as Zhang Hongfan and Liu Chuan who took the initiative to join them and make up for their technical shortcomings.

The two of them were not originally from the Great Song Dynasty, but Han people, and they were Han people who grew up drinking wolf milk.

As for the rumors that in order to satirize Zhang Hongfan, some people changed the message "Zhang Hongfan destroyed the Song Dynasty here" to "The Song man Zhang Hongfan destroyed the Song Dynasty here".

What a ridiculous literati romantic imagination, the patriarch of the Zhang family was an official of the Jin state, and he was born four years after the Tatar bandit group defeated the Dajin bandit group, so at most, it is said that the family is Han in the northern region.

The same is true for Liu Quan.

Later generations said that if the Southern Song Dynasty treated the people of the original Liaojin region well, it might delay its demise.

But how else to be kind? As long as they cross the river, they are directly identified as Southern Song Dynasty people, they can move freely within the Southern Song Dynasty, they can go to live in any big city, and their housing problems must be solved...... What a treat for the displaced!

What else?

However, because the northern Han people at this time passed through the Liaojin period, they drank too much wolf milk, and they were no longer the same as the Great Song people.

One is grown up in a jungle society, believing in steel knives, and having milk is a mother, as long as you can win and grab things, you can do everything.

One was raised in a business society and believed in business. I can always find a way to do business, and I can get what I need by exchanging it, and I agree with science......

To use a metaphor that may not be appropriate, one is a belief in hooliganism, the other is a belief in commercialism, and the two sides are too poorly matched.

So. The Han people in the north, who had experienced the Liaojin period, were less likely to work for the Great Song Dynasty, on the contrary, they preferred to join the Tatar bandit group, which was more suitable for them.

If it is said that the Liaojin era was the post-bandit group era when there was already a legal system, then the Tatar bandit group arrived. It's too much appetite for them, so their combat ability at this time is amazing.

Because the Tatar bandit group has completely aroused the evil in them, because they also have a share in the harvest of the battle!

On the other hand, the Great Song Dynasty does not allow corruption or robbery...... Not much of an attraction to them.

This is the opposition of two worldviews.

After the Tatar bandit group made up for the shortcomings of the naval army with the help of the northern Han people, they had the ability to attack the two cities of Xiangfan.

But that's not enough. Ant-attached combat siege, that's really too difficult. Therefore, when attacking the two cities of Xiangfan, it took them a total of six years.

It is worth noting that they fought siege warfare for more than five years before returning artillery, but after having its technology. The battle was resolved in less than a year.

Since then, the course of the battle of the Tatar bandit group has been smoother...... This shows the importance of the return gun.

Because of that time and space, there were no metal tubular artillery in the world, and the explosive power of black fire/powder was not enough.

During the Southern Song Dynasty of the Great Song Dynasty, they lost. Because the Tatar bandit group can be said to have used the highest technology and the most effective army in that time and space, and they are not aggrieved.

Economic problems, internal problems, strictly speaking, are not the main ones, because the Tatar bandit groups have more problems, and the internal struggle is more brutal!

However, it cannot be said that anyone who grew up drinking wolf milk has a world view that does not match the Great Song Dynasty at all, and there is also a special character, he is Zhang Shijie.

Zhang Shijie was originally a small officer under Zhang Hongfan's father, and he broke the law, so he fled to Songzhou, and was subordinate to the Huai soldiers.

During the Great War of Ezhou, he showed ferocity in the battle against Andong Prefecture, and contributed to the rescue of Ezhou with Gundam, and was transferred to the tenth rank of official position.

Soon the entourage Jia Rudao entered Huangzhou, fought on the lawn, recaptured what the enemy had captured, and added an officer to the sanitation, and now he is in Huainan East Road to know the Andong Prefecture Army.

Not long ago, he heard that there was a stone cannon standing on the city, which could hit hundreds of paces away!

There is also the arquebus army directly under the official family of the Great Song Dynasty, which can rain bullets......

So he couldn't hold his breath, because he heard that the stone cannon was standing at the head of Lin'an City in advance, which he understood, but he couldn't ignore Andong Prefecture in the future, this is also the front line.

He immediately wrote an official letter requesting, but there was no reply.

He couldn't wait for this day, so after handing over the military affairs to his deputy, he went to Lin'an City as a private person...... As soon as he got off the ship, he was attracted by the stone cannons on the top of the city, which was really spectacular!

He was about to go straight to the wall, but was stopped by the guards.

Zhang Shijie had previously been a sanitation officer, although he was just an idle military minister with no real qualifications, but he was still familiar with ordinary forbidden army officials.

He mentioned a few people, and it happened that there was an officer in charge of the place, and after the two met, they really knew each other.

The officer said, "Zhang Zhijun, how did you get here?" ”

Zhang Shijie pointed to the stone cannon at the head of the city and said, "It's ...... for this thing."

The officer smiled and said, "Don't worry, I heard that Xiangfan Second City is being equipped now, and then take care of other ......."

Then the two went up to town to watch.

Zhang Shijie understood the beauty of this object at a glance, looking at its huge size, it must be farther than a bed crossbow.

He took a closer look, and felt that it was really a good imitation, and asked how to use it, and he completely understood.

He looked at the huge stone ball and said, "Can you hit the dock?" ”

The officer said proudly: "Of course, when the official orders the test firing, the boulder can sink the wooden boat on the pier in a few breaths......

Zhang Shijie looked at the distance and felt that he was more confident in defending Andong City.

He said, "Why don't you wrap it in a tarpaulin?" Don't let the Tatars steal their studies......"

The officer said indifferently, "The stone cannons are very heavy, and even if they learn them, they will not be able to transport them from afar, unless they take materials from the place...... There are no more giant trees here, and I heard that the armory is going to buy them from afar, and there are better changes......"

Zhang Shijie was suddenly happy, could it be better?! He decided to pay a proper visit to Commander Fako.

In fact, in ancient Chinese history, the principle of leverage was used very early, and it has also been mentioned in the "Book of Ink", for example, the name used in the Great Song Dynasty is to use the principle of leverage.

However, they did not think that the use of the return cannon in the military would make the return cannon the most advanced weapon.

It's really speechless.

Previously, Zhang Guoan explained the basic principle of lever to Fa Ke Pencil, that is, the distance from the lever fulcrum to the force point is times the number of heavy stones, which is equal to the distance from the fulcrum to the force point is times the number of force stones, why is this?

Just like the combination of fixed pulley blocks, you slowly explore the principle in practice, anyway, either you use hundreds of people, or you use dozens of people, or a few people to operate!

The timing of Zhang Guoan's teaching to him was just right, and this student who took the initiative to send it to the door was also just right, the entire Great Song Dynasty still needed this object, and the Great Song Dynasty officials still valued it very much, and Pingzhang, who was engaged in autocratic power, also strongly supported it, so that the history of science and technology in the Great Song Dynasty changed a lot!

In other ethnic groups, the principles of science and technology promote the change of scientific equipment, and in the time and space of the Great Song Dynasty, it has become scientific equipment that forces the progress of scientific and technological principles.

At this time, with the help of the craftsmen, the Fa Ke commander finally came up with a formula for expression in the true sense of the word, not an example, nor just a general reference...... (To be continued.) )