The only thing that is a little troublesome is that the location of the Baiyun Obo rare earth mine is too close to the front line of the Anti-Japanese War, and the reserves of Shapinggou molybdenum mine in Jinzhai County, Dabie Mountain, are not inferior to those of Donggou molybdenum mine, and they cannot be developed for the same reason, so even if Hu Weidong prefers research and construction, he has to concentrate more energy on military work in order to win the war of resistance of the whole nation as soon as possible

The words are divided into two ends, and it is said that not long ago, in order to ensure the safety of the two battleships, Stalin temporarily handed over the thousands of planes of the Soviet aid air force sent to support the national army in the war of resistance to Pokryshkin under the command of Pokryshkin. After Pokryshkin popularized his self-created eight-plane formation tactics in the army, the combat effectiveness of the Soviet-aided air force soon improved by leaps and bounds, and it soon controlled the air supremacy in the eastern part of the First Theater and the northern part of the Fifth Theater of Operations

However, because the 35 th Army, which had just been greatly expanded, had not yet fully formed its combat effectiveness, and the bandits in the Shandong base area had not yet been completely quelled, Hu Weidong did not seize this opportunity to attack immediately, but only let the Soviet air force bomb the Lianyungang airport, and the Luda area was again subjected to large-scale air raids

Due to the fact that the number of losses had been too many before, the vigilance of the Japanese army was increasing day by day, and as a result, the sneak attacks of the two Soviet air forces turned into strong attacks, but relying on the overwhelming superiority in numbers and the genius command of Pokryshkin, and the Japanese anti-aircraft firepower was too poor. In the end, the Soviet-aided air force won two air raids, shooting down or blowing up more than 700 Japanese planes in total (nearby Japanese airfields sent planes to reinforce them), causing heavy damage to the Japanese naval base and shipyard in Luda again, killing and wounding more than 3,000 Japanese troops, and more than 300 planes of the Soviet-aided air force were shot down and more than 500 people were killed or captured.

Such a result is naturally good, but there are also three regrets, one is that after the devil learned that the Soviet aid air force was temporarily merged into one, he guessed that they might have to attack the brigade again, so he decisively dragged the four aircraft carriers that had not yet repaired the haode and the other larger injured ships back to the mainland, so they were spared, and the haode aircraft carrier was far from being repaired if it was bombed again. Even if it is salvaged again, there is generally no possibility of repairing haode; Second, the range of Soviet-style aircraft is too short, so many valuable targets cannot be reached, such as Seoul Airport, etc., so although the results are great, it is still difficult to completely grasp air supremacy, and after the Soviet Union picks up the battleships, the North China Air Corps suddenly loses strong reinforcements, and is afraid that it will be in trouble again; The third is due to the fact that the losses of the border area's own bombers are too great. In these two missions, no Chinese planes were dispatched, so as not to cause confusion instead of help. However, the fact that China's skies needed to be protected by foreigners deeply stimulated Hu Weidong, and under the pressure of the Soviet Union, which had been putting pressure on the Red Party Central Committee to obtain some advanced jishu in the border areas, Hu Weidong finally made an important decision

Since the border region had too few planes of its own, the planes of the Soviet Air Force were also equipped with gyroscopic sights, airborne radios, and turbochargers to enhance their combat effectiveness. However, while helping China fight devils, the Soviet aid air force also reported the benefits of these devices to their superiors, which led to the loss of secrets. However, Hu Weidong did not regret his decision. Because the current Chinese Air Force is not enough to compete with the Japanese air force alone, and besides, people are here to help us after all, it would be too much to let these Soviet pilots sacrifice needlessly for the sake of secrecy, but even so, the greed and stinginess of the Soviets still made Hu Weidong very unhappy.

The jishu of the airborne radio is just that, and the difficulty of research and development is relatively small, as long as you are willing to spend time. The USSR itself was completely able to figure it out, and the current USSR did not lack time. However, the gyroscopic sight and the exhaust gas turbocharger Jishu are different, and they only know the principle, but they do not understand the key. Even if it takes three or five years to get it done, especially the latter, even if a finished product is sent to the Soviet Union, it is impossible for the woolly bear to imitate a product with comparable performance in five years, you must know that even in the 21st century in history, reversing materials has always been the most difficult subject in reverse engineering, there is no one

And more importantly, the value of both is far from being measured by money, the former can enable a rookie pilot (or anti-aircraft gunner, anti-aircraft machine gunner) to obtain a shooting hit rate that is not inferior to that of an ace pilot, and even a skilled veteran, the shooting accuracy will be improved, and because you don't have to estimate the amount of advance yourself, the rate of fire in actual combat will also be greatly increased, and the error rate will be much reduced; As for the latter, it can greatly improve the performance of all internal combustion engines, and the improvement in the high-altitude performance of the aircraft is particularly amazing.

The Soviets may not be able to see the true value of the two, but they are only willing to offer a price of 50 million US dollars for these three jishu, and secretly let the scientific and technological experts who aid China try to steal them directly many times, but these people are very important to China's industrialization, Hu Weidong cannot drive them all out of the border area for the sake of security, and it is too tiring to guard against them all the time. Fortunately, although the Soviets were stingy with their money, they were very generous with their loans, and Hu Weidong also took advantage of this to reach a preliminary agreement with the Soviets in early November 1938 to exchange these three jishu for low-interest loans of 500 million US dollars, with an annual interest rate of 3% and a repayment period of 10 years, starting from the sixth year of repayment, with rubles as the delivery method, which could be converted into dollars, gold or materials needed by the Soviet Union according to the price in the international market at that time

The Soviets were very good at calculating, and they did not intend to give the Red Party cash at all, but mainly offset it with equipment, jishu, personnel training and raw materials. In this regard, Hu Weidong initially planned to spend 200 million US dollars to bring in scientific and technological experts and senior technicians, and 300 million US dollars to introduce jishu and equipment. Although the Soviet Union in this era has not yet become a superpower later, there are still a lot of jishu and equipment worth introducing, such as the V2 diesel engine Jishu used in T34, various cold-resistant materials, and including the largest 15,000-ton free-type hydraulic press in Shijie (before World War II, the Soviet Union's free-type hydraulic press Jishu tied with Germany for the first place, but the die-forged hydraulic press was still the best in Germany, and the United States and the Soviet Union did not catch up until the defeat of Germany.) ), and other large-scale complete sets of equipment

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