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In the northern part of China, a 60-gun artillery shelled a certain position, and the solid shells created a curtain of ash on the land. This is the latest artillery developed by the Yuan army, because the Yuan army is now taking the high-mobility tactics of combining mounted artillery, in the face of the republic, the Yuan army knows that the range, power, and number of artillery are far inferior to the republic's artillery. Once the orthodox artillery battle began, all the generals of the Yuan army agreed that their artillery would be destroyed by the republican shrapnel as soon as possible. It is not possible to conduct a proper confrontation. The Yuan army adopted another direction of artillery, a kind of artillery with a five-pound load, a firing range of 12oo meters, and a new weapon that can be quickly maneuvered by two horses, and cooperated with the cavalry assault of the Yuan army. Several Yuan troops in the north, who were regarded as descendants of the Yuan court, were more or less equipped with this kind of artillery. This kind of artillery with a barrel length of 1.7 meters can be mobile with the cavalry, and was called the eagle cannon by the Northern Yuan. Now more than a hundred such guns have been manufactured. The generals of the Yuan army hoped that this artillery could strike their opponents as quickly as an eagle on the steppe.

The use of artillery not only changed the way the Yuan army fought, but also changed the appearance of the cities of the Yuan dynasty. Originally, the population gathering place of the Yuan Dynasty was a fight with that of medieval Europe, and the population was large, and all kinds of livestock and human manure were piled up in the city and spread all over the city. Since the advent of the age of firearms, the raw material for the manufacture of gunpowder has become scarce, and at this time, the republican manure accumulation method has also spread to the north, and this technology cannot be kept secret Now, the north and south of the river know that dung can be converted into war resources. In the large cities of the Northern Yuan Dynasty, the number of sanitary areas increased sharply. There is a separate nitrate accumulation site outside the city. Beiyuan has a large population and a large number of horses and livestock, and uses this technology on a large scale. In the future, the spread of the Black Death was prevented from expanding eastward.

Now the Northern Yuan carried out so many eagle artillery firing in order to carry out a real yàn, and there were man-made ravines in the bombarded positions. After the shelling, the Yuan army sent people to inspect and found that there were many animals with their limbs tied to their limbs in these ravines. The Yuan army examines the intensity of such a dense artillery bombardment on the livestock in the ravine. The result satisfied the Yuan army, the gully can withstand the bombardment of solid bullets, as for the blow of shrapnel shells, now the Northern Yuan will not be able to build it, so it cannot be realized. The Seven Princes checked the number with satisfaction. Then in front of many generals of the Northern Yuan Army, he said: "Cha Khan, the tiger father really has no dogs, Wang Baobao brought this method of avoiding artillery to the south this time, and the credit is very great" Cha Khan bowed his head and said: "The Seven Princes are too famous, this is just a strategy to defend the city, and it still takes the soldiers of the Great Yuan to fight loyally and bravely to eliminate the thieves in the south." At this time, Wang Baobao also knelt down on one knee and said: "This method is a humble duty from the remnants of the defeated general Mo Rigen's soldiers, and the ravines and cannons are just a preservation strategy, and the last general will be useless" The seventh prince said: "Yes, you are not arrogant or impatient, it is really the pillar of the country, and you will be rewarded." The Northern Yuan obtained the trenches, this method of dodging artillery was actually not of much use in the field, because the tactics adopted by the Northern Yuan to quickly deploy the artillery and then the cavalry assault relied on quickly concentrating firepower to pry open the enemy's weak points, and then insert them like sharp knives. And trench warfare is the implementation of grabbing positions under the saturation of firepower, and the firepower is strong? At present, the Republican army, which has the most powerful firepower, cannot reach the level of trench warfare, which requires strong mobilization. At present, only the Republic and the Northern Yuan can mobilize more than 100,000 people to dig trenches. But the firepower of the Yuan army did not meet the conditions for the republic to dig trenches on a large scale. The cavalry of the Yuan army gave up maneuvering to dig trenches, which was tantamount to cutting off an arm. But the reason why the Seventh Prince is still so excited is that the Beiping cannon gave too much psychological pressure to all the big households in the capital. This method provides an idea for the major families in Dadu to dig holes and avoid cannons. So it became fashionable for the Mengyuan nobles in the north to dig a tunnel in their own homes.

The Yuan army in the north walked out of its own combat ideas, and the Fang family army in the south also embarked on its own combat mode. Because he is surrounded by a republic that is also an enemy and a friend, Fang Jiajun is following the path of imitation for this powerful neighbor Fang Jiajun, in Taizhou, Fang Jiajun's old nest, in a hydraulic drilling workshop, metal chips are flying around. This is where Fang Jiajun made wrought iron barrels. Fang Jiajun is currently armed with a front-loading rotating heavy flint gun. It was a Minnie bullet that was fired. The technology of this thing is really not high, so the enterprising Fang Jiajun inquired a little in the Republic, and gathered his skilled craftsmen to complete the manufacture of the finished product. This thing is already capable of inflicting powerful casualties on the republic. Of course, Fang Jiajun still wanted to engage in thunder mercury fire caps, but without nitric acid industry, this thing is not something that a few skilled craftsmen can play with a group of apprentices, and several fires were made for the test of thunder mercury production, causing forty casualties among craftsmen, and finally Fang Jiajun gave up this unrealistic idea. Only then did the Sui ignition occur, and now the Fang family army had obtained thousands of such muskets.

At the end of September 135o, a new type of Fangjia army was established to strictly train in accordance with the infantry drills transmitted from the Communists. There were 5,000 of them, and they were a division. Equipped with 1,200 homemade muskets of the Fang Family

Fifty light rifled bronze cannons, the army remained in a tight formation, with the pikemen in front and the musketeers behind, arranged in a hollow phalanx. If they are given enough time to exhibit, they can become full-fledged Spanish phalanxes in the future.

After the formation of this army, in October put into the Fujian area of the raid, under the cover of 20,000 cold weapons Fang Jiajun, this Fangjia new army played the role of a sharp knife in the process of fighting against the Fujian Yuan army. The Fujian Yuan army suffered heavy casualties after being hit by the intensive bullet rain of this new firearms army, and Fujian was mountainous and had few cavalry. Fang's army captured northern Fujian lightly. But it soon stopped due to logistical problems, and Fang Guozhen, who had seen the great power of the firearms legion for the first time, was delighted and at the same time frowned at the huge consumption of this army. This new army is strong, but it is too dependent on logistics. In order to build this unit, strict discipline and daily training are required. The food and drink of the soldiers was a huge expense. Not to mention the huge amount of gunpowder consumed during the war, as well as the barrel life.

Fang Guozhen calculated the loss of his army on the one hand, and on the other hand, he had a clear understanding of the strength of the republic two years ago, more than 100,000 pure firearms troops crisscrossed the Central Plains, and there was still the spare strength to mobilize 20,000 strong soldiers to attack the capital of the Yuan Dynasty. The territory of the republic is much larger and more populous than it was today. Fang Guozhen was not complacent at all after taking half of Fujian, and became more eager to build more new troops.

Fang Jiajun's stunning appearance made the surrounding forces shine. The firearms army can do it. A military revolution was born on the land of China. All the powerful forces began to set about forming their own new firearms army. War was indeed the driving force behind the technology fair.

As the helmsman of the republic, Cheng Pan felt a headache when he learned about the various military advances of the surrounding forces. Not on behalf of the Republican Army, the Quartet could not be suppressed. It is a matter of time before the final victory is won with the current republican industrial system. The point is that the good days of low casualties in the future of the Compuran Army are coming to an end, and the Minnie bullet is too ferocious.

In order to reduce casualties, Cheng Pan set up a medical laboratory in the Dabie Mountains, where thousands of soldiers guarded him, and machine guns were also arranged in key places. This is a location where the current Republic strives to climb technology. One such technology is penicillin production. At present, the strains are not high-yielding strains, and the cost of extraction and isolation is too high due to technical problems. Therefore, it will take a long time for the artifact of penicillin to be put into practical use. Another technology is even more lengthy, which is sulfonamides. The chemistry group is now very interested in the emergence of various derivatives of the new benzene family, and various new compounds are being discovered. Cheng Pan felt that they could not be fooled around without a goal, and put forward two goals for them, the first is to obtain an antibacterial substance in a red dye with a benzene ring, Cheng Pan gave a clue that this substance is only effective when injected into the body, and then reacts in the animal body to form a substance that can kill bacteria. Cheng Pan said in a word, the people in the yàn room were busy breaking their legs. In this real room, the rats were raised, streptococcal bacteria were injected, then the drugs were tested, and finally incinerated in the experiment, so the people involved in the research were hit by the failures again and again and cried. But it still persevered, and it took ten years for the republic to spend more and sulfonamides. After the invention of antibiotics that could be produced industrially, the names of all those involved in the trial went down in history. As for the current republic's chemical technology background, it is still too poor. The main thing is that there are not enough talents, and the time for chemistry to come out is still too short.

Antibiotics are far away. The republican tactics began to change, and now all field armies began to train the infantry to advance in the three-three system, and the grenade became a weapon for the front-line infantry offensive to increase vitality. Platoon advance tactics have been eliminated from the Republican Army. Creeping forward shooting became the new training program.

The whole country is now in the early stages of a tactical change. If the peacetime is extended for a longer period of time. The peasant uprising that was about to sweep the country would have been suppressed as soon as it moved, but it was too late. The Yuan Dynasty was already impatient with the Yellow River, which flooded every year and even affected the country's tax revenue, and in order to show the attitude of Xiàn to rule the world and express to the world the legitimacy of the Yuan Dynasty's heart for the world, the Yuan Dynasty appointed Jia Lu as the official of the Yellow River. 150,000 farmers in North China opened the river to control the Yellow River, and at the same time purchased a large number of iron tools to control the river from the Republic.

On the one hand, the Yuan Dynasty had a tentative attitude towards the republic, and if the republic was willing to buy this batch of iron tools, then a military disaster could still be avoided through negotiations, after all, the act of selling steel and other strategic materials to hostile forces in the early stage of the war was not a sign of wanting to fight. If the republic is not sold, then the unrighteousness of the expansion of the republic will be propagated and the rebellion will be taken advantage of the great event of the Yuan Dynasty to govern the river for the benefit of the country and the people.

To the relief of the Yuan Dynasty, the republic's sincerity to this business was very high, and as soon as the Yuan Dynasty was interested in the republic's fleet, it took the initiative to transport steel tools for 200,000 people to Huaibei. The Yuan Dynasty was very uncomfortable with the considerate service of the republic, but it would never let this iron slip away and buy it quickly.

So the Northern Yuan transported most of the tools to the Yellow River construction site, and at the same time continued to transport the tools north to prepare to build weapons. At the same time, ties with the republic were intensified. Beiyuan didn't think about how the 100,000 people would react when they got these tools that could have been used as weapons. The 800 tons of steel that Cheng Pan spent on these tools played an important role in the Red Turban Army's uprising.