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The red-coated cannon is a famous naval cannon in the late Ming and early Qing dynasties, and after it was introduced into China, it was used for defending and attacking the city, but because of its bulkiness, it was not suitable for field warfare, Li Su let them develop the red-coated cannon, in order to be loaded on the sea ship, the naval battle of this era still stayed in the overboard battle, relying on the numerical advantage, and the emergence of ship-based guns like the red-coated cannon will change the rules of naval warfare.

According to Li Su's idea, he is ready to gradually import the basic science and technology during the first industrial revolution in the West, so that Tong Nian and others can master these basic technologies step by step, so that a perfect industrial system can be formed in the future, rather than like the Soviet Union in the early days of the founding of the People's Republic of China, once the technical experts were withdrawn, the country immediately returned to the pre-liberation period.

Of course, Li Su can buy a lot of modern equipment, but relying on these ready-made things, Yizhou's industry will never be able to really grow, in case Li Su accidentally loses the ring that day and loses the support of modern industry, then Yizhou will not be the same as the period when Soviet experts were withdrawn? When the time comes, it will have to return to the original state, and as long as Yizhou's industry really grows, Li Su's dependence on modern times can be greatly reduced, so what Li Su really needs is not a red-coat cannon, not a flint, not a steam engine, what he needs is a group of people who can develop these things, with this group of people, does he still have to worry about not having these things? When the time comes, he will be able to produce as much as he wants, just like some countries that are now restricted in nuclear weapons, although they do not have nuclear weapons, but they have the ability to produce them at any time, which is the real threat.

From the inferior cannons made by Tong Yu, Li Su learned that the blacksmiths lacked skills in casting steel products, not to mention some fine steel parts, such as screws, springs, screw caps and the like.

After explaining the principle of the red-coated cannon to them, Li Su and Jin Daqian left Taoyuan, and it will take some time for it to be put into use.

Taoyuan is under construction, Li Shimin's holy decree did not come down, taking advantage of this time Li Su returned to the modern era, the completion of the industrial system needs a series of things, just take this red-coated cannon, need steel casting, need gunpowder production, need cannonball making, each of which requires different tools.

Back to the villa, Li Su went online to find all kinds of equipment that appeared during the Western Industrial Revolution, and then looked back at the equipment that appeared in the second and third industrial revolutions, and he recorded some necessary basic industrial equipment while searching, focusing on the equipment before the eighteenth century, because the equipment in the future basically used electricity, and it was somewhat impossible for Li Su to make electricity in a short time, after all, electricity is a thing that seeks breakthroughs in accumulation, and the technology before the eighteenth century is done, and it will naturally move towards the back.

Called Xia Yan, Li Su went to a machinery factory, after inspecting the machinery factory, Li Su handed over the information in his hand to the director of the machinery factory, the equipment in these materials are the equipment of the first and second industrial revolution period, Li Su plans to produce in small quantities, and then build a factory in Taoyuan, so that Taoyuan can form a perfect industrial system, and these equipment structure from the sixteenth to the eighteenth century is also very simple, after the blacksmiths study, they should also be able to produce.

Receiving Li Su's order, the director of the machinery factory is also ridiculous, the company's rumors that the chairman likes retro style are true, this task is too simple for him, he naturally agreed without hesitation, Datang Group can show its face in front of the chairman is not easy.

Datang company is now thriving on the right track, the annual profit is also increasing, Li Su's account of hundreds of millions of income is proof, at the high-level meeting Li Su praised Xia Yan and the new management executives, and asked them to continue to work hard.

After the matter of Datang Company was over, Li Su was about to go back, and suddenly remembered that Sun Simiao had been thrown in Yizhou by his own people for a long time, and this temperament should be smoothed out, to deal with this kind of research maniac, Li Su thought of a way, after returning to the villa, he downloaded some medical materials and printed them out, and then returned to Yizhou.

Counting that Sun Simiao has been locked up in Yizhou for more than two months, Li Su specially asked people to prepare a house for him, with good food and drink, but there are guards guarding the door, which can be regarded as putting him under house arrest.

When Li Su came, Sun Simiao was sitting in the courtyard reading "The Yellow Emperor's Neijing", and when he saw Li Su, Sun Simiao just talked and glanced at it and then looked at the book, Li Su learned from Su Moer's mouth that Sun Simiao has a very stubborn personality and has never been afraid of the powerful, and he does not obey the orders of the court.

Sun Simiao has not seen Li Su since he arrived in Yizhou, Jin Daqian saw that Sun Simiao was so rude, and he was about to give a lesson when Li Su stopped him, Li Su took a stack of books from Jin Daqian's hand and sat down in front of Sun Simiao.

Sun Simiao was born in 581, and now it is the eighth year of Zhenguan in 634, which is fifty-three years old, and history records that Sun Simiao did not die until 682, and lived a total of one hundred and one years, which can be regarded as an old birthday star in this era.

Sun Simiao's head is already gray, not fat or thin, his body is strong, his nose is high, he has the demeanor of an immortal family, and he is much stronger than Guo Xianyuan.

Li Su did not report his name, but put a book in front of him, this is Li Shizhen's "Compendium of Materia Medica", after downloading some materials, Li Su went to the bookstore to buy an original version.

Sun Simiao was stunned for a moment, put down the "Yellow Emperor's Neijing" in his hand, looked at Li Su, and glanced at the "Compendium of Materia Medica" on the stone table, still ignoring Li Su, and then, he picked up the "Compendium of Materia Medica" and looked at it, but he couldn't let go of it at this look, as if he had seen a treasure in the world, and praised while looking at it.

Sun Simiao looked attentively, and he was completely outside, while Li Su was waiting quietly, and he had to put down his body for talents, and accepting people was to collect his heart.

An hour passed, Sun Simiao put down the book, wisped his beard and chin slightly, "His Royal Highness the King of Shu has bothered." ”

Jin Daqian and Li Su were both stunned, and Li Su said: "How do you know that I am the King of Shu." ”

"I have seen Concubine Yang, the mother of His Royal Highness the King of Shu, His Royal Highness's appearance is four points similar to her, in addition to His Royal Highness, who else in Yizhou City has such a look, and the guards at the door are extra cautious when saluting His Royal Highness Different from others, they seem to be very awe-inspiring, who can be like this except His Royal Highness." Sun Simiao said.

Li Su secretly said that he was really an old man, he stood up and hugged his fists, and said: "It is really rude to take Sun Lao to Yizhou, and I ask Sun Lao for forgiveness." ”

"Although a certain cloth is clothed, His Royal Highness is losing his royal demeanor by doing this." Sun Simiao was still very angry when he thought about it, but Li Su was the prince after all, and he couldn't scold him.

Li Su smiled bitterly: "Because this king knows that Sun Lao will not come to Yizhou if he doesn't come to Yizhou, how can this king set up medicine in Yizhou, isn't Sun Lao his own responsibility to practice medicine and save people?" It's just that you can save thousands of people by walking among the people, and this king's establishment of medicine is enough to save people in the world from diseases. ”

"His Royal Highness the King of Shu has a big breath and starts medicine? How? Sun Simiao said.