"I met with Prime Minister Wen just now, and he asked me to take care of Du Hu. Go back and make arrangements for you to let the brothers on Quang Nam East Road try their best to rescue him, you must be careful. After saying this, Fang Zhixing said again. Although Du Hu is also an official in the imperial court, he can also be said to be a person in the rivers and lakes, even if there is no Wen Tianxiang's instructions, it is the right thing to save him.

"Prime Minister Wen?" Guo Poyu didn't get much excited when he heard this. After all, although today's Wen Tianxiang also insists on resisting Mongolia, he is not necessarily more famous than Lu Xiufu, Zhang Shijie, Chen Yizhong and others. He was just a little surprised that his master had just left and had gone to see this person. After all, Wen Tianxiang, as the right prime minister of the Xing Dynasty, must have been extremely tightly guarded, and Fang Zhixing must have taken a risk when he went to see him.

Fang Zhixing didn't say much about this, but just instructed: "I met with Zhang Hongfan and killed Li Heng easily, after the news is sent back, the Tartars will definitely not give up, you should be careful in the near future." ”

"Zhang Hongfan, Li Heng!" Guo Poyu was extremely surprised when he heard this. Immediately, he was a little puzzled and asked, "Master, why don't you ...... Don't kill ......" There was a slight hesitation in his words, and he didn't ask out loud.

"Don't you kill Zhang Hongfan, right?" Fang Zhixing didn't know what this disciple thought, so he took his words and said.

Hearing this, Guo Poyu immediately nodded. If it weren't for the extreme hatred of Zhang Hongfan in his heart, Guo Poyu would not have asked. After all, Fang Zhixing is his master, and he has his own plan for how to act, and he doesn't need advice from his disciple.

Turning his head to look in the direction of Zhang Hongfan, Fang Zhixing said lightly: "This person has an old relationship with your Xuantong master, and he is seriously ill. I don't need to do it. He met Zhang Hongfan at the right time, and he could already see that he was seriously ill. If there is no miracle doctor, I am afraid that it will be difficult to survive for a year. has a little friendship with the elder brother Xuantongzi. Fang Zhixing can't be a villain anymore.

"Is he seriously ill?" asked Guo Poyu. Although he still wondered why Uncle Shi and Zhang Hongfan had an old master who still didn't save him, he didn't ask after all. What Zhang Hongfan did, in his opinion, is not an exaggeration, and naturally he will not speak for him. Moreover, the relationship between Zhang Hongfan and his uncle must not be deep, and it is not worth the master's rescue at the risk of the world's disapproval.

Fang Zhixing said: "Miasma! It's already deep into the bone marrow!" he sighed faintly as he spoke, not knowing what to think. No matter what, Zhang Hongfan can be called a generation of heroes, and he is going to die at such a young age. It was also a little complicated in Fang Zhixing's heart.

"Miasma!" Guo Poyu was in a trance for a while when he heard this, as if he remembered the time when he was pioneering more than ten years ago. At that time, although he and Fang Yuxia had already explored Liuqiu once, there were still many unpreparedness, and many of the people who were brought over for the first time suffered from miasma and other epidemic diseases, and finally had to ask Fang Zhixing for help. Because of this, Fang Zhixing and Li Mochou stayed in Liuqiu for several years, and have been guiding him and Fang Yuxia in various matters, establishing various health standards, and building a city. Only then did he finally establish a foothold in Liuqiu, and after receiving the people of Xiangyang later, he ruled the whole island by Shun Lì. Because of this, Guo Poyu remembers the miasma very well. This kind of thing, which is almost extinct in the densely populated places of the Central Plains, is by no means as easy to deal with as similar, not to mention epidemics transmitted by mosquitoes and insects.

"yes! He shouldn't have gone south. It's a pity!" Fang Zhixing said. In terms of the doctor's ethics, he can relieve his pain regardless of his status as a patient. But from his own standpoint, he can't do that. And if you save Zhang Hongfan, kill him again. Fang Zhixing asked himself if he could do it, so he could only turn a blind eye. "It seems that I am not a healer after all!" Fang Zhixing laughed at himself in his heart. Even if he is a profound doctor and does not have that kind of benevolence, he is not a real doctor.

Guo Poyu didn't have so many thoughts, and said hatefully: "Such a traitor, it's cheaper for him to die like this!" In his words, there was still some hatred.

Shaking his head in his heart, Fang Zhixing didn't explain much, just stood on the bow of the boat and looked at the sea in the distance. The Battle of Yashan Sea, although he had expected it in his heart, and he was not as sad as he imagined, but it was impossible to say that he was completely untouched. What he was thinking at this time, even he couldn't say clearly, it was really complicated.

After a long time, seeing that the sun was about to set, Fang Zhixing sighed lightly and said, "Let's go!" turned around and asked Guo Poyu to order someone to sail away.

Guo Poyu answered, ordered someone to pull up the sails, and turned around to beg. This kind of ship is heavier in wind, and the Song and Yuan Dynasty sailors are different from today, it can be said that Fang Zhixing recalled some vague shipbuilding knowledge in his mind, and explored and discussed with a group of shipbuilding craftsmen, until a few years ago, it was finally finalized and became like this. Although 2,000 stone is not a big one, it is limited to manpower, materials, etc., and there are not many such warships on Liuqiu Island, most of which are still being debugged, otherwise, there will not be only a few ships this time.

It was getting dark, and the group naturally couldn't turn around immediately, so they found a small island nearby, rested for the night, and then had to return the next day. At night, Guo Poyu sent people to the land to deliver the news, so that the people in Wuyang City could rescue Du Hu, and arranged again.

Two days later, Fang Zhixing, Guo Poyu and others finally returned to Liuqiu, and as soon as they arrived on the island, everyone heard a good news, but it was the method of casting cannons with iron molds that Fang Zhixing said, and now it has finally been successfully explored. With this method, the cannon cast on Liuqiu Island was not only more time-saving, but also cheaper, far superior to that of Meng Yuan's side.

"Once the sky was dark, the wind and rain were evil, and the artillery fire, thunder, flying arrows and stars fell. Fang Zhixing remembered the verses he heard from Wen Tianxiang's mouth the day before yesterday and whispered. The method of artillery and rockets, since the invention of gunpowder, is not too unusual. Even the primitive musket of the assault rifle was once produced in Xiangyang City - with a huge bamboo barrel as the body of the gun, the inside was filled with gunpowder and bullets, so the principle of the artillery can be said to be no secret. A few days ago, during the Battle of Yashan, the Mengyuan Navy Division also used artillery and other gunpowder weapons. But today's artillery has almost no crosshairs, and its power has increased, so it is more used as a trumpet gun. The most important way of naval warfare is still to seize ships and fight closely.

As for the artillery on Liuqiu Island, it is also thanks to the skilled craftsmen who moved to Liuqiu after the Battle of Xiangfan, including the people who made the muskets in front of them. Fang Zhixing also came from their mouths. Only then did I learn that firearms at this time had developed to this point. It was only after that that he began to study artillery with these men. And gradually standardize it into a weapon that can be truly used in actual combat. Especially for naval warfare. Over the past few years, there have been some achievements, but it is still difficult to talk about large-scale manufacturing. Technically, the most important of which is the copper required for casting cannons. Nowadays, most of the cannons are made of copper, but copper is mainly used to cast money, so every copper cannon can be said to be cast with money. There are not many copper mines in the first place. Not to mention that it can meet the needs of casting cannons, and if you use iron casting cannons, it is easy to have problems such as porosity and trachoma, but it is a thing that urges life, so Fang Zhixing and others have always been trapped here and cannot cast cannons on a large scale. The reason why Fang Zhixing asked these people to explore the iron mold casting method is also because of this.

After hearing the good news, Fang Zhixing, Guo Poyu and others arrived at the place where the cannon was cast. The presiding craftsman saw this. Immediately introduced in detail, and said: "The use of iron molds to cast cannons is indeed faster and stronger than before. But the cast iron cannon. It's still a little undurable, and it's a little dangerous. Therefore, Lao Yu discussed it with everyone, and still felt that it was better to have an iron core copper cannon. The main point is still ...... Or ......"

"Copper is still needed. Right!" Fang Zhixing said. Since it is necessary to develop artillery, the island of Yiliuqiu is far inferior to the financial and material resources of the Yuan Dynasty. Naturally, he had to make the technology of the artillery extremely mature, so that the Yuan Dynasty could not catch up at once. Otherwise, the people on the side of the Yuan Dynasty will be able to explore and imitate it when they see it, which will enhance the enemy's strength. Compared with the closed and self-defended Manchu Qing Dynasty, the Mongols were much more pioneering, and their acceptance of firearms was also stronger, and the first cannon unearthed in later generations was made by the Mongol and Yuan courts twenty years later. Once they learned that artillery, a siege weapon that was better than return artillery, the Mongols would never let it go. Therefore, in addition to perfecting the hollow mud mold casting method, the iron mold casting method, the iron-core copper casting method, the pure copper manufacturing method, the pure iron casting method and other methods of casting artillery, Fang Zhixing also standardized the barrel, caliber, double diameter, rifling, crosshair, illumination, gun carriage, fort, etc., and constantly improved the gunpowder formula he knew, developed the weight and charge of the shell, and developed the solid bullet, flowering bullet, shotgun, etc., which later generations had heard of, and formulated the corresponding artillery technology. So far, it is only a small achievement, and it will take some time to really put it into actual combat.

The craftsman nodded when he heard this. He also knows that the flow of money is not abundant, and the copper material is even more lacking, but today's iron cannon is really not reassuring, and the most secure is the so-called iron core copper cannon. However, although this method is much less expensive than the pure copper cannon, it is still very expensive, and it is difficult to cast on a large scale on the current Liuqiu Island. Fortunately, a few days ago, a new batch of copper was obtained, and it can be temporarily supported.

The iron cannon has not been put into practical use for a long time, but Fang Zhixing did not blame, technological progress has always been accumulated bit by bit, these people can find out the method of casting the cannon with an iron core copper body and an iron mold, which can be said to be hundreds of years ahead of today's era, and it is really impossible to force it. As far as he knows, in addition to the need for special cannon steel, the artillery of later generations also needs equipment such as giant hydraulic presses, which is really not something that can be achieved in a moment, and in today's situation, it can only use iron-core copper cannons first.

"The method of casting iron cannons, you can continue to explore in the future, and start to make iron core copper cannons in the future. The previously verified guns were put on the batteries on the Penghu side to guard against the Tartars. The Song Dynasty has been destroyed, and I am afraid that the Tartars may pay attention to Liuqiu in the future, and they must be prepared first. Fang Zhixing said. Penghu is the first line of defense and the most important transit station for Liuqiu, and Liuqiu has spent a lot of effort on it over the years, and nearly half of the forces of the sailors of Liuqiu Island are there.

Hearing this, everyone should be. The first battle of Xiangfan has brought Liuqiu Island into the sight of the Mongols, and in recent years, Liuqiu has recruited displaced people everywhere, and many people have known about this place, and if the Yuan Dynasty court did not know, it would be a little strange! Now that the great enemy of the Song Dynasty has been completely eliminated, it is not impossible for the Mongols to send sailors to attack Liuqiu. Not to mention Zhang Hongfan's sailors, after the failure of the conquest of Japan five years ago, the Mongols have been building warships, and now there are more than 3,000 ships. Therefore, the matter of artillery on board the ship is urgent. Fortunately, the technical preparations have been preliminarily completed, and a number of warships have been built, and now they can already start trying.

"Has the ship sent to Luzon returned? Is there any news?" Fang Zhixing asked again. Since calculating the copper needed to cast the cannon, he has sent people to collect bronze from various sources, in addition to collecting bronze objects on the mainland, that is, on the surrounding islands. One of the most important places is Luzon. The first is that this island is very close to Liuqiu, and there are many Chinese who have moved to it, and the second is that Fang Zhixing vaguely remembers that there seem to be many copper mines on it, which can be described as a treasure land. For several years, he has been sending people to explore, hoping to obtain the copper ore above.

"I'm back, I'm back, I'm back, I've brought back a lot of copper!" said the man. If it weren't for the copper materials brought back by these people, they wouldn't still choose the iron-core copper cannon. Although it is not known whether copper mines can be found in Luzon, the copper materials brought back alone are enough for Liuqiu to cast hundreds of cannons, and can also meet the needs of the moment.

"Is that really the case?" Fang Zhixing raised his eyebrows and said. After three lifetimes, he understood the meaning of copper better than these people. Once there was copper, Liuqiu could not only cast cannons on a large scale, but also mint money on a large scale, not only to buy more supplies, but also to disrupt the economy of the Yuan Dynasty. If it is used well, it can also accelerate the decline of the Yuan Dynasty, and the significance of it is no less than hundreds of cannons.

Seeing that Fang Zhixing was rarely happy, Li Mochou smiled and said, "Of course, will we still lie to you." It is said that there may be copper mines there, but it is far away from overseas, and it is deep in the mountains and dense forests, so it is inconvenient to mine, and it is not known when it will be shipped back. "In this Battle of Yashan, neither she nor Fang Yuxia went to watch, and stayed on Liuqiu Island.

Hahaha, Fang Zhixing said: "If it doesn't work in one year, won't it be in ten years? As long as you explore the place, you can always mine it." At that point, Liuqiu will truly be able to take off!" he said, gazing north, as if thinking of the sight of expelling the Tartars. The two pieces of news he heard today convinced him that it was no longer a dream to drive the Tartars out of China in advance, and that he would be able to see this scene in his lifetime! If you like this work, you are welcome to come to the Biquge www.biquge.info () to vote for recommendation, monthly pass, your support, is my biggest motivation. For mobile phone users, please go to M. to read. (To be continued......)

PS: Everyone says they want to cast a cannon, I'll cast it, but the technology tree is not so easy to climb, this article is just a rough sketch, the shortcomings, please forgive me!