The chopped wood burned in the fireplace, and the fire was very strong, making the living room as warm as a spring day.

Wu Haogu sat upright on the main seat of the head, and in the guest hall, Brother Zhao Zhong, Wan Yan Xianye, and Wan Yan Ah were all seated as guests and hosts.

The house used to entertain the Jurchen visitors was not in the Jiehe Commercial Market, but in Aojiabao, fifty or sixty miles south of the Commercial Market. That is, the Aojiazhuang that originally belonged to Olga. Not long ago, Olga gave birth to a son named Iron Heart.

As early as when Olga gave birth to his first child for Wu Haogu, Wu Haogu asked Aojiazhuang to be expanded into Aojiabao as a gift to Olga. Wu Haogu himself also participated in the design of Aojiabao, introducing the style of Western castles. The castle and the residence are one, covering an area of not large, but more than a dozen acres. However, the height is really not low, and the square city wall alone is more than three zhang high. The towers at the four corners of the city walls are as high as six feet. The main building is a hollow-shaped brick and timber building that is almost integrated with the city wall. The four outer walls and the city wall are one, and the height is about six zhang. In the center of the hollow is a courtyard, which is not decorated, but has been built with stables and cattle pens.

The hall used to entertain guests is on the north-facing south side of the hollow-shaped building, and the main entrance of the building is also open on this side, facing the only gate of Aojiabao. In addition to the city gates, there are drawbridges and moats.

Such a sturdy and unusual castle is, of course, used to defend against a possible Jurchen invasion! According to Wu Haogu's assumption, in the future, on both sides of the Jiehe River, around the Jiehe commercial market, there should be hundreds of "knight forts" like Aojiabao. Each castle was a small but sturdy stronghold that could withstand a long siege.

"How's the castle?" Wu Haogu smiled and asked the oblique and Ah clutches who were present. "What about the castle built by the Koreans? If you let the two lead the troops to attack, is there a way to defeat them? ”

"Xuan Shuai laughed," Xian also smiled, "How can we have the ability to fight your castle?" Your fortress is much stronger than the fortress built by the Goryeo dogs in Holadian. It's made of red bricks! It's small, but it's not strong, the walls and towers are as tall as they are, and there's a moat around it. Unless Xuanshuai himself went out and blew up the city wall with gunpowder, there was no way to fight. ”

Wan Yan Xian was also wrong, in fact, this castle is difficult to blow up with gunpowder. Wu Haogu himself is a master of digging pits and bombing cities with sappers, how could he not take this problem into account when building a fortress? So the moat outside the fortress was dug deeply. Between the moat and the city walls, a deeper trench was dug to seal the upper floors with stone slabs and earth, and there were passages and inner city links that could be guarded in wartime.

Therefore, such a castle, even the sappers of Wu Haogu, have no good recipe. Unless the bronze artillery, which is currently being secretly developed, enters the practical stage.

The bronze artillery project is the No. 2 R&D project of the Yuntai Xuegong Metallurgical Institute (No. 1 is cold forging armor), a total of two project teams are carried out separately, and the reward for successful research and development is as high as 100,000 yuan.

And this 100,000 yuan bonus, of course, is not so easy to earn. Wu Haogu needed more than just a tubular bronze cast gunpowder weapon capable of firing projectiles. It is a field artillery that is lightweight, durable, and powerful. In addition, in order to be able to achieve standardized mass production, it is also necessary to come up with key and accurate performance elements.

Therefore, both project teams set up test sites and cannon casting yards in the Goto Islands, far away from Jiehe Shang City, and repeatedly carried out trial production and testing of cannons.

The reason why Wu Haogu put forward such high requirements, instead of so-so casting some cannons that can shoot projectiles, is mainly because he is afraid that the cannon casting technology will be leaked prematurely. Liao also has gunpowder weapons! Although they do not make granular black powder, and the recipe is not necessarily accurate, it is by no means "nothing", but "there is".

Therefore, as long as the Liao people get samples of artillery, it is not too difficult to imitate them. If you can't make a field artillery that is lightweight, durable, and powerful enough, but so-so, you can cast some cannons that are inconvenient to move, can't be used in field battles, and can only be used for siege, then Wu Haogu is not enhancing the power of the Great Song Dynasty, but harming the Great Song Dynasty.

In fact, the difficulty of casting siege artillery is much lower than casting field artillery. Because siege artillery has lower requirements for lightness and rate of fire, the thickness of the barrel can be larger, and it can also have more cooling time, and the safety factor to prevent explosion is also greater.

Moreover, siege artillery also has relatively low requirements for accuracy, so that it can accept the poor handling of the bore.

In other words, the level of craftsmanship in casting siege artillery is lower than that of casting really useful field artillery.

In addition, there is also a design similar to the tiger squat cannon, which was also hidden by Wu Haogu. This weapon is actually an intermediate form between guns and cannons. Later generations said that it was the earliest mortar, but it was not a curved weapon, but a direct fire. When reloading the fragmented scrap copper and iron, it can be shot dozens of paces away, but it is a bit like the shotgun of later generations.

This weapon is somewhat useful against cavalry assault or cavalry fire, but it is certainly more effective when used to bombard infantry in formation. Therefore, it must also be hidden in the snow and wait until wartime before it can be taken out to equip the troops.

Since artillery weapons must be prevented from leaking secrets, of course, they cannot be provided to the living Jurchens for use. Wu Haogu pulled up the abacus in his heart. Bronze cannons can't be given, but black powder can still be provided to the Jurchens, and it is impossible for them to analyze the recipe and process of black powder anyway.

But this black powder can't be given to them in vain......

"Are the castles of the Koreans made of wood or rammed earth?" Wu Haogu thought for a while, and then said, "Do you want me to send some sappers to investigate?" ”

"That's great! With Xuanshuai's help, we will be able to pull out the knife that the Goryeo dog has inserted in the Jurchen land. ”

Ah Lihe laughed, he spoke Chinese very well, with an authentic Central Plains accent and a round tone, obviously learned from the doctors of Tianli Academy.

"Brother Ah Clutch," Brother Zhao Zhong smiled, "Don't be busy applauding, our Xuanshuai is willing to help, but there are still people on Xuanshuai!" ”

Xian also said to Ah Clutch: "Xuan Shuai is also a minister, and there are officials above. He asked Wu Hao Gudao, "Xuan Shuai, do you need the official family's nod before you can send someone to Haoladian?" ”

"You don't need the permission of the imperial court to send someone to Haoladian," Wu Hao Gudao, "but the preparation of black powder requires the consent of the imperial court." ”

In fact, the production factory of black powder is in Jiehe Shang City, and there is no need for the nod of the imperial court at all, Wu Haogu himself can control it.

"Will the court allow it?" Diagonally asked.

"I'm afraid I won't nod for nothing, right?" Wu Hao Gu said, "The relationship between our dynasty and the Goryeo Kingdom is also good. There's no reason to offend Goryeo for the sake of Daliao's vassals, right? ”

"This ......," said Xianye, shaking his head, "but we Jurchens and Khitans are mortal enemies!" As long as these swarm of Goryeo flies are fed, the Jurchens will be able to unite against the Khitans. When the time comes, we'll be allies. ”

"Allies?" Wu Haogu smiled, "Xianye, do you think the Jurchens can be on an equal footing with the Great Song Dynasty?" ”

Slanted and Ah Clutch glanced at each other.

Ah Clutch asked, "Xuan Shuai, what do you mean...... Do you want us Jurchens to be vassals to the Great Song Dynasty? ”

That's a good idea! Let Wanyan Agu fight Zhao Ji as a minister, maybe he can give hundreds of thousands of years old, so that the Jin Kingdom of the Jurchens can enjoy the treatment of Western Xia.

"It's not enough to be a minister!" Wu Haogu shook his head lightly, "Even if you become a courtier of the Great Song Dynasty, you can enjoy the treatment of the earlier Western Xia, not only do you not have to pay taxes to the imperial court, but you can also get the New Year's gift." Such a good thing cannot be asked for by other countries. That is to say, the imperial court wants to unite you to crusade against the Khitan, so it will accept you Jurchens as a vassal state. ”

"That's, that's ......"

The two of them didn't know very well how awesome they were, and Yan Dangda nodded again and again. And I'm very happy, I can unite with the Song Dynasty to fight the Khitan together, and after the victory, I can still receive the New Year's gift from the Song Dynasty, is there anything more beautiful in the world?

As for pushing the Great Song Dynasty and entering the Central Plains or something...... The current Jurchens do not have such fantasies.

"I don't know what other conditions Da Song has?" Wan Yan also asked.

Of course, there are conditions!

The current Jurchen Tribal Alliance is like a start-up with good development prospects, and it still needs a little venture capital. And Wu Haogu now plans to invest money in the Jurchen "company" on behalf of the super rich venture capital fund of Da Song.

If you invest money, of course, you will have to take shares.

Wu Haogu said with a smile: "There are two more conditions, one is that the Jurchens must believe in heavenly principles and follow Confucianism. ”

"Liao is abolished, Jin is Confucian" said, Wu Haogu has also heard of it. So he has always been keen to spread Confucianism to the Jurchens.

Of course, what he wanted to pass on to the Jurchens was not Wang Anshi's Jinggong Xinxue, nor was it the science that had recently become more and more prominent in the Great Song Dynasty. It is Confucianism with "Tianli Shuo" as the core, although the science will also be Tianli, but the difference between the science and the later Confucianism Tianli school is still very large. It is equivalent to the difference between Buddhism's Enlightenment (Dharma Xiang Buddhism) and the Pure Land True Buddhism.

"Okay!" Ah Lihe laughed, "It's not a secret, I came to Jiehe with Xianye this time, just to learn Tianli Confucianism." In the future, when we Jurchens establish a country, we will take Tianli Confucianism as the state religion. ”

Wu Haogu nodded with satisfaction, he actually knew that the theory of Tianli was gradually separated from the positivist school, but in any case, the core of the theory of Tianli was still Huaxia's thought.

"Second," Wu Haogu continued, "we will open a academy and build a commercial market on the land where we gave birth to a girl. Moreover, both the academy and the commercial market have the right to self-government! ”

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