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Now, Yang Tianfeng decided to concentrate on grasping the mountain troops. He transferred the independent brigade out and all of them entered the Mangdang Mountains to conduct intensive training in accordance with the "Methods of Mountain Warfare" drawn up by him. At the same time, he also urged all departments to step up the production and manufacture of equipment related to mountain warfare.

Of course, Yang Tianfeng did not forget to give Sun Tongxuan the "Mountain Warfare Tactics" to train his troops accordingly, and suggested that he buy more mules and donkeys to prepare for the future march into northern Henan and the Taihang Mountains.

Speaking of which, mountain guerrilla warfare should be what the Eighth Route Army is good at. But when it comes to detail, accuracy, and systematization, we have to count this "Mountain Warfare Tactics".

Yang Tianfeng not only divided the mountain into different natural environments such as jungles, forests, thatch, bamboo, and stones, but also pointed out the corresponding offensive tactics and defensive position construction. Even mountain marches, vigilance, reconnaissance, camping, assembly, coordination, and liaison have been analyzed and discussed in detail. At the same time, he also summed up more practical tactics and tactics in light of the equipment characteristics of the New Seventh Army.

There is no leisure, but there is time. The military and government affairs in the base area are already on the right track, and there is no need for Yang Tianfeng to do it himself. Most of the time, he just needs to listen to the report, give guidance, and make suggestions.

Therefore, Yang Tianfeng no longer has to sit on the front line, keep in touch with telegrams and telephones, and he can put his energy on the "crooked door ramp".

The so-called "crooked ramp" is a weapon or method that can speed up the process of the War of Resistance. If there are conditions, Yang Tianfeng is eager to build the atomic bomb and let the devil "taste" it first.

But in fact, there is information, but the relevant equipment and raw materials, as well as high-end technical requirements, are not available to Yang Tianfeng. Therefore, he can only settle for the next best thing, to develop weapons of mass destruction within his capabilities, or to increase the power of current weapons and ammunition.

Henan is a large bauxite province, Xinmi, Dengfeng, Sanmenxia and other places have production. The purchase of bauxite has started a long time, and the electrolytic aluminum industry has developed from scratch, from small to large, and has now achieved initial results.

Yang Tianfeng classified the aluminum industry as a military industry from the beginning, but he didn't want to make some aluminum pots and aluminum pots to make some small money. Except for a small amount of aluminium that was processed into aluminium alloy for use in weapons manufacturing, the rest was hoarded in preparation for the manufacture of more powerful ammunition.

With the development of military chemistry and coal chemical plant industry, the raw materials needed by Yang Tianfeng were gradually solved, and he first began to improve the power of the current ammunition.

With the help of the "wet process" to produce aluminum powder, this production method introduced in 1910 is to add petroleum solvent to the ball mill instead of the "dry process" inert gas, and the aluminum powder produced is mixed with the solvent into a slurry. This method is simple in equipment, safe in process, and very convenient to use.

It was then mixed with nitrates and other substances to make explosive and more powerful hybrid explosives, resulting in thermite bombs. This thermite explosive is used entirely in the loading of rockets, which greatly increases the lethality.

With the continued development of thermite bombs, it will be closer to Yang Tianfeng's ultimate goal, the cloud burst bomb, a big killer known as the "subnuclear bomb".

The cloud burst is the latest progress in conventional ammunition blasting technology, which not only has the killing effect of conventional ammunition fragmentation, but also has the effect of asphyxiation, powerful shock wave and strong thermal and electromagnetic radiation. The difficulty in the development is the thermobaric explosive filled inside, also known as cloud explosive.

Yang Tianfeng directly abandoned the first and second generations of cloud burst bomb manufacturing, and directly jumped to the third generation. In addition to the information in his head, the restrictions of the first and second generations of cloudburst bombs are relatively strict. Because these two generations of cloud explosions need to be sprayed with equipment or thrown by aircraft, they are first mixed in the air to form aerosol clouds, and then a second detonation is carried out to cause explosions.

The third-generation fuel-air explosive, also known as cloud explosive, solves the problem of indirect initiation and changes the secondary detonation to a primary detonation. As a result, the structure of the fuel-air bomb was simplified, the cost was reduced, and the reliability was increased.

It is precisely because of the maturity of the third-generation cloudburst agent that the cloudburst bomb can be made smaller and smaller, and there are cloudburst rockets for individual use, and even thermobaric grenades.

High-energy explosives, propylene oxide/nitric acid and propylene oil, ultra-fine magnesium aluminum powder, as well as modification additives and stabilizers, as well as strict requirements for filling density, can achieve a detonation, and can meet the requirements of detonation speed and detonation pressure.

Obviously, there is still a lack of materials to make cloudburst bombs, chemical products and high-energy explosives are available, and ultra-fine magnesium aluminum powder is a big difficulty. The requirements for thermite bombs are much lower than those for cloud burst bombs, and to obtain ultra-fine magnesium aluminum powder, greater progress must be made in manufacturing equipment and processes to achieve it.

Even if it cannot be immediately put into the production and manufacture of cloudburst bombs, the military production in the border areas has made incredible achievements so far. It is also an indisputable fact that the weapons and equipment of the New Seventh Army have surpassed the Japanese army in some aspects.

In terms of long-range heavy artillery, which has the most obvious gap, with the continuous improvement of manufacturing technology and metal smelting, as well as the improvement of charging charge and propellant, the maximum firing range of the 120 heavy guns has reached more than 7,000 meters, but the weight of the whole gun has only increased by 30 kilograms. Moreover, the development of a rocket extended-range bomb is close to success. Theoretically, the maximum range of a rocket extended-range projectile launched with 120 heavy forces should be more than ten kilometers.

Taking a mature weapon system to the extreme, in pursuit of the minimum cost and the maximum production speed, this is what Yang Tianfeng is extremely good at. From ordinary heavy mortars, to exploiting various potentials, to rifled mortars, and finally to mortars, he is moving unswervingly along this line of thought.

The major event that made Yang Tianfeng feel that the overall strength of the base area had risen to another level was the establishment of the radar system. After Chongqing was equipped with radars successfully developed by Shu Xingbei and other experts, Chengdu, Kunming, and other important cities and key defense areas were all launching radars.

Of course, the radar given is not a complete machine, but a batch of electronic components, as well as drawings that have been improved and proven successful by experts such as Shu Xingbei.

You must know that the information and drawings that Yang Tianfeng took out are definitely no problem in theory. However, based on the current situation of the country at that time, there were many components that were not available or could not be produced, such as high-power magnetrons and high-power three- and four-pole electron tubes.

However, Shu Xingbei is worthy of being China's "father of radar" and a genius physicist, and he has increased the radar frequency to 500 megahertz through several circuits that are not too complicated, playing the role of high-power three- and four-pole electron tubes, and greatly improving the accuracy of radar search and guidance aircraft.

Of course, this is still a considerable gap compared with the current 3,000 MHz radar in the United Kingdom and the miniaturized radar that can be equipped on aircraft, but it will play an extremely important role in China's war of resistance.

After getting the radar drawings that could be put into practical use, Yang Tianfeng admired and felt very embarrassed. Although the materials and drawings he provided opened the door for the development of radar, it was the painstaking efforts and wisdom of the people who made it possible to develop the radar successfully.

In return, as well as the adoration and trust of experts such as Shu Xingbei. While leading engineers and technicians to work overtime to assemble radars, Yang Tianfeng sorted out the data of high-power magnetrons, transistors, quadrupoles, and even transistors, and sent them to the Technical Research Office of the Chongqing Military Command Department for reference and research by Shu Xingbei and other experts.

In terms of manpower, material, and financial resources, the rear areas are more qualified than the base areas in the border areas, and are more likely to successfully develop these advanced electronic components, thus promoting the development of radar, transmitters, radiopositioning and navigation, and other technologies, and enhancing the strength of the entire War of Resistance Against Japanese Aggression.

After continuous intense work, the first radar station in the border area was finally established in Mangdang Mountain, which used a relatively primitive method of mechanically rotating antennas to carry out scanning, and could not carry out all-round scanning and early warning. But with a successful start, from point to network is just around the corner.

And the successful establishment of the radar station can be described as a great help to the expected spring counter-sweep. Because the directions that the New Seventh Army has to guard against and resist are mainly in the north and east, the radar antenna can basically meet the operational needs by scanning only these two directions.

By giving early warning and discovering the number and even aircraft types of enemy planes in advance, Yang Tianfeng can dispatch the "air force" to intercept or attack the enemy knowing his own enemy. Not only has the air defense security of the base areas been greatly improved, but it can also support the ground forces and mitigate the air threats they face.

……………

No matter whether people are looking forward to it, busy or idle, time will not slow down, let alone stagnate, and the time has entered March 1940 with a fixed pace.

Jiang Junfeng exhaled a thick white mist and looked up at the gray sky, the snow under his feet creaking. She also seemed to hear vague, or indescribably grinding.

"Make you lazy, dog traitor!" The shrill scolding interrupted Jiang Junfeng's distraction, and it turned out that Wang Guihua was beating a puppet army captive.

Although the time for the recovery was short, people have already discovered that the behavior and style of the New Seventh Army and the Eighth Route Army are very different. The Eighth Route Army paid attention to the preferential treatment of prisoners, but the New Seventh Army was harsh and not lenient. A large number of puppet army captives were carefully screened, and only a small number were added to the troops, and the rest were used as coolies.

Xigaotou Village was assigned more than 30 prisoners of the puppet army who had been reformed through labor and atoned for their crimes, and those who were freezing had to dig ditches and repair and sweep the damaged houses...... It's just the work, anyway.

Each newly recovered village and town has a village chief and a town head, and they have begun to take care of things. In order to maintain law and order, soldiers were also stationed, one platoon and one squad less, not only to guard prisoners, but also to help villages and towns set up joint defense teams and conduct military training.

The young adults who ran against the country and the scattered Self-Defense Forces gradually returned to the village. Although there are more men, Jiang Junfeng and Wang Guihua, because they were the first to participate in the joint defense team, have mixed up with a half-official position, and they are the chief and deputy leaders of the women's group of the village joint defense team.

Although they did not become female soldiers, Jiang Junfeng and Wang Guihua both carried guns, their waists were straight, their confidence was sufficient, and the assigned tasks were completed more actively. Moreover, the joint defense team is much stronger than the original village self-defense force, with twenty or thirty people, but more than a dozen guns. In his free time, he was led by the squad stationed there, walking in line, practicing aiming, assassination, and tactical movements.

"These dog traitors, if they don't beat or scold, they won't be honest." After Wang Guihua finished being the supervisor, she came over to talk to Jiang Junfeng.

Jiang Junfeng smiled and said, "The puppet army is hated, but now, it's quite pitiful to look at." ”

"Pity them?" Wang Guihua pursed her lips, "Thinking about the bad things they helped the devils do, I can't wait to beat them hard, villains with no conscience." ”

Jiang Junfeng has also heard and witnessed the badness of the puppet army, and when he thought about it, he put away that bit of mercy.

"This time, even the county seat has been defeated, but there is no need to be afraid, and I can live a peaceful life." Jiang Junfeng said with some emotion, a thick white mist erupted from his mouth, "When you have time, let's go shopping in the county?" Haven't been there in two years? ”

"The fire of the Zhang family is so fragrant!" Speaking of visiting the county seat, Wang Guihua swallowed hard, and the expression on her face became excited, "On the second day of February, there is a big gathering in the county, let's go that day!" ”

Jiang Junfeng nodded vigorously, and the time was set. In fact, visiting the county is one of them, and the girl has another purpose, hoping to see Liu Dachuan again. The squad stationed in the village belonged to Liu Dachuan's company, and they learned from them that this company was stationed in the county village.

Hazy feelings often arise unconsciously, not to mention the age when Jiang Junfeng is so old and sometimes thinks about it for a while.

Taking back her hand towel, she had doubts in her heart, and she also rippled. Liu Dachuan left the handkerchief on his body, was it intentional or unintentional? Giving her back, does he want to show that he doesn't owe each other, or does he think about her all the time? If it weren't for Liu Dachuan's help, the joint defense team would have just been established, and he would have been able to make himself the female team leader, and he would have personally sent a gun?

Without waiting for these questions to be answered, Liu Dachuan's company drove away in a hurry one night, and the two did not even see each other.

The more he thought about it, the more entangled he became, Jiang Junfeng looked forward to seeing Liu Dachuan again, or to probe the situation, or to ask about it.

The whistle sounded, and it was time for a shift change and a break.

The puppet captives were pardoned and driven back to the village to be re-imprisoned, and they were given a meal of gruel and pickles, as well as sorghum flour cakes. If you don't have enough to eat and you can't starve to death, this treatment is also a punishment for them.

Jiang Junfeng and Wang Guihua laughed and went home for dinner, and they ran into the original village elder Sun Tou'er. The two greeted the old grandson, but the old grandson snorted and staggered into a small alley.

The old grandson went back to the village to inquire about the news, but was caught by the people of the maintenance association and hung for half a night, but he was rescued by Liu Dachuan's company and picked up a life. But just because Jiang Junfeng and Wang Guihua saw that the New Seventh Army was not bad to the common people, and there was a shortage of food for a while, they took out the public grain on the strong wall, which annoyed the old grandson at once. (To be continued.) )