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It's not that you poke the "basket" around, Yu Yanong doesn't really have such thoughts. Anti-Japanese devils, afraid of retaliation and a fart, it's better to dig a pit and hide and finish the job.

Moreover, when Yang Tianfeng spoke, there was no fear or worry on his face, and he seemed to have a long time in his chest.

"There is a regiment of the National Army, and the enemy is in a big defeat, so it is estimated that there will not be enough troops in the short term." Yu Yanong nodded and said: "Yudong should be relatively stable in the near future, but it should not be taken lightly!" ”

Yang Tianfeng smiled and nodded, but did not explain too much. The reinforcements were not only a regiment sent by the Third Group Army, but also a provisional 1st Cavalry Division under the command of Sun Tongxuan in the Huangpan area from Zhoukou to Jieshou, which was reorganized and renamed the 8th Cavalry Division after 1940.

In August 1937, Chairman Chiang ordered Qinghai Ma Bufang to send troops to participate in the War of Resistance Against Japanese Aggression. Inspired by the call of the people of the whole country to resist Japan and save the country, Ma Bufang also underwent some positive changes in his attitude towards Japan, and at the same time, out of the attempt to take advantage of the opportunity to expand the troops, he decided to send a unit to the Central Plains to participate in the War of Resistance on the premise of preserving the strength of his regular troops.

Therefore, Ma Bufang requisitioned and transferred militia regiments from the three counties of Datong, Huzhu and Huangyuan (among them, the elite ones were used to supplement the vacancies of the Southern Border Region Garrison Command after they were transferred), as well as the old and weak soldiers eliminated by the 100th Division, as well as the Ma Lu Division of the Second Brigade of the Fifth Army of the Ma Buqing Cavalry and the Ma Bingzhong Division of the Second Regiment stationed in the Hexi Corridor, forming a cavalry division of about 8,000 people, with soldiers from Hui, Han, Salar, Dongxiang, Baoan, Tibetan and other ethnic groups. Especially the Hui people.

Obviously, the cavalry division drawn by Ma Bufang was not his main force, and sending such a team out of the province to resist Japan did not have any impact on his military strength. However, at the critical moment when the disaster of the country was imminent, he was ordered to send troops to participate in the anti-Japanese resistance and joined the ranks of the anti-Japanese national united front, which also showed patriotic ideology and national consciousness to a certain extent, and played a certain positive role in ensuring the stability of the anti-Japanese rear in the northwest.

On September 1, 1937, under the warm farewell of the masses of all ethnic groups and all walks of life in Xining, Ma Biao's division set out from Xining, and then arrived in Qianxian County, Shaanxi Province via Lanzhou and Pingliang. Along the way, the masses of the people also expressed their warm farewell to the Japanese officers and men, which made the officers and men of the unit in high spirits and the military prestige invigorated. Since then, 8,000 Qinghai athletes have begun their anti-Japanese career of thousands of miles to fight in the Central Plains.

In 1938, the cavalry division (then known as the 1st Provisional Cavalry Division) crossed the Yellow River at Tongguan and Fengling to the north and reached the Ruicheng area in southern Jinnan, and attacked the Japanese army in Yuncheng to ensure the safety of Tongguan; Later, in Weishi, Fugou, Yanling, Huaxi and other counties, they also achieved the record of annihilating 1,000 Japanese puppet troops.

Soon, the reorganized cavalry division transferred the whole division to the Yellow Flood area in the area from Zhoukou to Jieshou in the southeast of Henan Province, and the main force was stationed in Xiangcheng, with the task of defending the Japanese army in Huaiyang.

According to history, cavalry divisions not only often crossed the Yellow River, but also attacked the Japanese troops in the Huaiyang area in the form of "small cavalry groups". He even besieged Huaiyang City, occupied the west pass of Huaiyang City, and carried out a surprise attack behind the enemy with light cavalry, causing the Japanese reinforcements from Kaifeng to suffer from the enemy on their backs and finally retreat.

With such a brave and daring friendly army, Yang Tianfeng can certainly think that the situation in eastern Henan is not critical, and even in the future, there will be greater improvements. And Xu and Beng, or the enemies along the Jinpu line, are his biggest threats.

After sending Yu Yanong away, Yang Tianfeng just sat down and read the long letter that had just been sent. It was sent by Yongcheng, and it was a summary of all aspects of work, and a summary of the information would be sent to Yang Tianfeng in half a month at most.

The time of departure was not long, but the breakthrough in the military industry on the summary data made Yang Tianfeng feel excited.

First of all, the ironworks have finally smelted tungsten ferroalloy and carbon steel using the crucible steelmaking method, and are using the tungsten concentrate transported from the rear to refine tungsten alloy steel and high-speed alloy steel.

Secondly, after thousands of tests, a breakthrough has also been made in mild steel, which is similar to the tensile and ductility of copper, and copper pouring experiments are underway.

These two pieces of good news alone made Yang Tianfeng so excited that he couldn't help himself, pacing back and forth in the room, imagining the great leap forward of the military industry.

The success of the crucible steelmaking method can be said to be a package solution to the technical problems of the new method of smelting steel, refining pure tungsten, refining ferroalloys and alloy steels, and frontal steel (high-speed tool steel).

Ferro-tungsten is the material for refining gun barrel steel, and tungsten steel is the tool steel required for the production of aircraft, combat vehicles, warships and various light and heavy weapons. In the current situation of lack of imported materials, the successful refining of alloy steel in wartime will directly ensure that military production can obtain high-quality materials.

This should be their glory, Yang Tianfeng thought of the thousands of scientific and technological workers who were working hard and hard in the rear for the War of Resistance against Japan, and the industrial workers who worked tirelessly and hard.

The crucible steelmaking method was successful in 1939 in history, when metallurgical experts such as Zhou Zhihong and Qiu Yuchi succeeded through repeated trials. Using this technology, the quality of tungsten die steel made by the 28th factory of the Ordnance Industry Administration is comparable to that of imported Baifeng steel. During the Anti-Japanese War, the special alloy steel, machine gun barrel steel, non-telescopic steel, stainless steel, spring steel, and special alloy castings produced by the factory basically met the military needs of the Anti-Japanese War.

Yang Tianfeng's ironworks can smelt tungsten alloy, which means that it is not far off to refine special alloy steels such as die steel, knife steel, gun tube steel, and spring steel. And mild steel, if successful, will bring ammunition production into a new chapter in history.

This is the contribution and hard work of the ancestors, without them, Yang Tianfeng would not have so much information available, and there would not be so many hardships and self-reliance deeds to inspire him.

The breakthrough of key technologies not only means the overall improvement of China's smelting technology, but also has great significance for the development and growth of the Suzhou base area and the three verticals.

With high-carbon steel and tungsten alloy, it solves a big problem of self-made machinery and equipment. In addition to the complex machinery and equipment, Yang Tianfeng also plans to build a number of simple pedal machine tools, and distribute more military production to family workshops, so as to reduce the burden on the arsenal and increase output.

Tungsten alloy can not only be used to make molds and knives, but also to manufacture high-quality gun barrels and tungsten core armor-piercing bullets, which are extremely widely used in military applications. China is a major tungsten ore country (about 90% of the world), and has always been an important commodity for exports, with the outbreak of the Anti-Japanese War, tungsten ore exports fell sharply. As long as he has money, Yang Tianfeng is not too worried about the supply of raw materials. (To be continued.) )