Although Stalin, who refused to admit his mistakes, adopted the method of sending additional ground crews, his attitude towards the Soviet-aided air force under the North China Air Corps was somewhat improved than before, and in August 1938, he made up for the shortfall caused by the loss of aircraft, and all of them were the latest improved I16 fighters. Then, in late October, he again sent 150 planes to the Soviet aid air force, and at the same time invited Hu Weidong to visit the Soviet Union again with bad intentions and selected the corresponding personnel by the way, but Hu Weidong naturally refused, but Pokryshkin, who chose for his return to China, still brought in many future World War II ace pilots such as Kozhdub

The strength of the Border Air Corps (now the "North China Air Corps of the National Revolutionary Army") was further strengthened, but the greater benefit was always to appease Chiang's discontent (in fact, the main reason was that too much aid to the Red Party would make the Western powers think that the Soviet Union had begun to 'export revolution' again'). In the second half of 1938, Stalin sent two additional volunteer air units to support, and with the addition of the first batch of 300 aircraft, the total number reached an astonishing 1,200 (but because of the previous battle damage, the total number of the third batch was only about 1,000 when it was in place.) Although this kind of favoritism has made the Red Party very dissatisfied, it has objectively relieved the tremendous pressure on China after the rapid expansion of Japan's aircraft production capacity

The rapid growth of the Air Force requires not only aircraft and pilots, but also ground crews and special supplies such as aviation gasoline. In other words, Hu Weidong has been working on the training of ground crews for a long time, and now it has paid off, and aviation gasoline has also been localized, and the quality even exceeds that of Soviet products (historically, until the end of World War II, the Soviet Union's refining capacity was very problematic. ）。 One of the most surprising is castor oil, the most important raw material for the production of high-grade lubricants required by aircraft, because Hu Weidong had already promoted the cultivation of castor in the barren hills and mountains when the Central Plains border area was first established. So even with a significant increase in the number of aircraft, the supply of lubricants for the Air Force has always been more than enough, and even "exported" to the national control zone. While supporting the War of Resistance Against Japanese Aggression, it also increased the economic income of the peasants in the border areas to some extent. As early as a few years ago, Hu Weidong was able to consider such a "minutiae" trivial matter, which surprised the top brass of the Red Party. Even Taizu, who easily did not praise people, gave Hu Weidong "far-sighted and thoughtful." "Extremely high rating

In fact, the reason why the Air Force was able to achieve such astonishing results was that in addition to the efforts of the Air Force itself, the sabotage warfare and economic blockade launched by the four major enemy base areas against the Japanese-occupied areas during the "Battle of the Hundred Regiments" also contributed a lot. The former directly reduced the ammunition and fuel supply of the Japanese North China Front Aviation Corps, while the latter forced the Japanese army to devote more of its limited transportation capacity to the transportation of daily necessities, and the transportation of military materials was naturally further reduced, so although the total number of planes of the Japanese North China Front Aviation Corps rapidly increased to more than 1,000, more than 100 aircraft were dispatched at a time was already the limit, so the North China Air Corps was given the opportunity to learn from the war and fight stronger and stronger, and at the same time, for the same reason. The Air Corps, which was increasingly strapped for fuel supplies, was no longer able to take the initiative to launch large-scale air raids on the Central Plains border areas, and after the only way to crack the new tactics of the North China Air Corps could not be implemented, the Japanese army's air supremacy in the occupied areas became precarious.

Under these circumstances, the Japanese North China Front Command knew that doing so might trigger a large-scale offensive by the Red Party Army, but it still had to write a haode script according to Hu Weidong's early history. began to launch a large-scale sweep of the anti-Japanese base areas behind enemy lines, and the first to bear the brunt was the Shandong base area that made the chrysanthemums of the Japanese army on the Jinpu Line unsafe...,

The strength of the anti-Japanese base area in Shandong was strong, so the Japanese army dispatched 100,000 Japanese troops and more than 50,000 puppet troops to carry out a dragnet sweep, in order to solve this major hidden danger once and for all. In order to prevent Jinan and other large and medium-sized cities in Shandong from being taken advantage of by the enemy, the Japanese base camp agreed to transfer three field divisions from the Kwantung Army to Pingjin, so that the Japanese army in Pingjin could send 100,000 troops south to aid Shandong. However. Even though the Red Party was not yet able to efficiently decipher the telecommunications codes currently used by the Japanese army, it was almost impossible for the devils to make such a large-scale movement to conceal the military commanders of the 15th Army, who not only had underground party reports but also reconnaissance planes (Note 1) dispatched from time to time to reconnoiter the enemy's situation. After discovering the movement of the devils, Hu Weidong immediately informed the old subordinates in the northeast of the plateau through the radio station of the Xinhua News Agency, and as a result, the Anti-Japanese Federation took advantage of the great opportunity of the Kwantung Army's field divisions being transferred out in large quantities, resulting in a serious shortage of mobile troops, and launched an unprecedented summer offensive in the summer of 1938

Before the plateau came to the northeast, the anti-Japanese armed forces in the northeast, which once claimed to have hundreds of thousands of people, had long since lost their former glory. In 1934, the sinister and vicious old devil Sasaki went to Osato to serve as an adviser to the Ministry of Manchuria, and he formulated a series of measures to transform the puppet Manchu army, transforming it from a scattered rabble into a reactionary force that actively suppressed the Chinese people and had strong combat effectiveness. Because the original puppet Manchu army was incurable, Sasaki went to the old army to disband and rebuild, in order to prevent the collusion of soldiers and bandits, he distributed bullets, the puppet Manchu soldiers only had 30 rounds of ammunition per person, if the battle failed, immediately disbanded the troops, and the chief officer was held accountable until he was shot. As a result, the price of bullets on the black market was as high as seven and a half cents, and several ways for the anti-Japanese armed forces in the Northeast such as the Anti-Japanese Federation to replenish bullets were almost blocked. In addition, Sasaki Daiichi formulated two jihuas, which directly brought the once vigorous anti-Japanese activities in the Northeast into a desperate situation. First of all, "Manchukuo's Three-Year Public Security and Rectification Jihua", which concentrated the military to attack the core of the anti-Japanese armed forces in the northeast -- the Northeast Anti-Japanese Alliance, and adopted different tactics specially designed for other anti-Japanese armed forces according to the specific situation, not only to divide and disintegrate, but also to have more sinister intentions

Note 1: The reconnaissance plane of the Type 97 Command captured from the Japanese army was extremely fast and long-ranged, and even the Japanese army's own active fighters could not catch up, so even if they gritted their teeth with hatred, they could not contain the reconnaissance of China's North China Air Force, but this also accelerated the research and development process of the Japanese Navy Air Force Zero Fighter and the Army Air Force Type 1 fighter (welcome to your support, is my biggest motivation. )