In addition to various ceremonies, the founding of the country also required the construction of a decent palace, and although Zhang San felt that he would not stay in the Ryukyus for long, everyone agreed that the current courtyard was not enough to show the majesty of the king.

Now because the founding of the country is imminent, the progress of various projects has been accelerated, especially the square in front of the prince's gate, this square is Zhang San with reference to the Tiananmen Square design in later generations, in addition to the same flag-raising platform, there is also a monument to the heroes of the kingdom to be placed in the future, at the founding ceremony, Zhang San wants to unveil the monument.

On the left is the cabinet office, on the right is the military department, at this stage Zhang San has no interest in engaging in any democracy, it is quite good to say it alone, and the future will be talked about in the future, maybe after one or two generations of education, the quality of the people will rise.

The city wall is one of the points of contention, in the view of the Great Song Dynasty people, China from ancient times to the present is a city must have a wall, for Zhang San put forward the uselessness of the city wall theory we can not accept for a while, although Zhang San took them to visit the war mode of the firearms age, but these people still feel that there is a city wall good.

Even if it is for the symbolic meaning of building a circle of walls at critical moments, it can still play a lot of roles, Zhang San is very helpless about this, so he has to force the public opinion, if he does not build the wall, if a country is beaten to the capital, then what is the use of building the wall? It's not a northern city, it's the Ryukyus.

Now the city is not what it used to be, and now the expansion of the city has included several villages outside the city into the urban area, and the population has exceeded 300,000, although it is not as good as some big cities in the Great Song Dynasty, but such a scale is also prosperous and abnormal.

Moreover, Tamsui City has attached great importance to planning from the beginning, both the streets and sewage and drainage have been built very well, and a large number of green spaces and parks have been retained in the city for future use.

There are many enterprises in Tamsui City, but they are all in specially designated places, and many of the important factories are demarcated within the military camp, such as the fire oil refinery, and the factories such as the Tamsui Gun Factory and the Tamsui Gunpowder Factory.

Needless to say, the oil refinery is a big killer in Zhang San's hands at this stage, oil is oil, although Zhang San can't get the internal combustion engine now, but he has mastered the advanced oil fractionation technology, which is still very helpful for the development of the petrochemical industry.

Petroleum can not only be used to make internal combustion engines, many modern industrial raw materials need to be obtained from oil, the so-called chemical industry is a collection of petrochemical industry, coal chemical industry, salt chemical industry, now Zhang San's chemistry has just started, many are teenagers sitting in various chemical experiments.

But Zhang San believed that if he took out all the inventory in his stomach, how could he raise the scientific and technological strength of the Great Song Dynasty to the level of the seventeenth and eighteenth centuries in the West? At least I know Niu San, and I know the principle of making the periodic table of chemical elements.

After three years of hard work, the steelworks have finally mastered the process of smelting wrought iron, although the use of these wrought iron to make guns is not particularly ideal, but it has been able to gain an advantage over non-firearms units in actual combat.

The second generation of muskets focuses on two improvements, one is that the firing success rate of flint has increased to eighty, and the other is the improvement of bullets, although it is not yet possible to do rifled guns, but after using the principle of Mini bullets to increase air tightness, the range of the musket has also increased by fifty percent.

In this way, the effective range of the musket exceeded 260 meters, and the use of steel core-coated tin bullets could penetrate the Song army's iron armor at 100 meters, and the Song army's heavy shield at 50 meters.

And this kind of steel-core tin bullet is just a steel warhead added to the middle of the ordinary tin bullet, and there is nothing difficult to produce in high technology, this kind of warhead is specially developed after the recent war with the Song army.

The tactics of the Song army were to shoot arrows with heavy shields in front and archers and crossbowmen in the back, and when this turtle tactic faced the enemy cavalry, the cavalry really couldn't help the formation of standing still, which was of course also a challenge for the Ryukyu army.

There are also shields in the formation of the Ryukyus, but it is not the kind of full-body heavy shield of the Song army, the building idea of the Ryukyu army is more of an offense, and the shield is only to resist the opponent's arrows, so the shield of the Ryukyu army and the Great Song may not be able to hit the other side when they collide.

And ordinary tin bullets are difficult to resist in the face of such a formation, because ordinary tin bullets in this formation need to be close to about ten meters to penetrate, so that the opponent will hit in front of them after a round, so Zhang San combined with the theory of armor-piercing bullets in later generations to come up with this kind of warhead.

In this way, even in the face of the Great Song army, the Ryukyu army was sure to defeat the opponent head-on, but the all-firearms army was considered unfeasible at this stage, and the firearms army might be underprepared and defeated by the shock when facing the cavalry.

Of course Zhang San knew this truth, even in the later generations, even when it came to World War I and World War II, there was still soil for cavalry to survive in the world, so it proved that even at that time, cavalry could still effectively deal with infantry.

Therefore, after Zhang San's research, we designed two formations, one is the military formation against the enemy's army, and the other is the military formation against the cavalry of the grassland people, and the difference between the two military formations is the difference in the proportion of firearms.

After the end of the war against the Great Song Dynasty, the next stage of the Ryukyu Army will be successively reequipped, so now the gun factory is in full force to produce muskets, and the production of cannons is also accelerating the expansion.

Because the new guns will be supplied to the navy first, there will be five models of newly minted guns, and each ship type will be equipped with three types of guns, which are 20 mm, 40 mm, 60 mm, 80 mm and 100 mm according to caliber.

Larger cannons are also being developed, and the current tonnage of warships is enough for these cannons, these cannons are all front guns, and the booster device is also being developed, and now the so-called booster spring or anything is not yet, only through manpower reset.

The gunpowder workshop is a piece of land specially set out, this thing will explode, Zhang San has to be cautious, and this is also a key defense unit in the Ryukyus, this Yangzhou defensive battle Zhang San also saw several firearms of the Great Song Dynasty.

In general, although the firearms of the Great Song Dynasty have some innovation, they still do not depart from traditional thinking, and the gunpowder weapons invented also rely on their combustion characteristics to kill and injure the enemy, and there is a rocket, which is a rocket tied to the arrow to boost the arrow to make the arrow shoot farther.

But people already have gunpowder, but they don't think about it, as long as people diverge their thinking, and then have a reference, then they can quickly imitate it successfully, so Zhang San did not use these new concepts of firearms in this war against the Great Song Dynasty.