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In less than a month, the Anti-Japanese Federation not only wiped out tens of thousands of Japanese troops, but also worked hard to hollow out the manpower and economic base of the puppet Manchurian "Dong'an Province", and even directly threatened the eastern border border fortress group that the Kwantung Army Command attached great importance to, which could make the bigwigs of the Kwantung Army mad

As a result, the threat of the Anti-Union in the minds of the Kwantung Army's top brass quickly escalated to a level with the Eighth Route Army, second only to the 15th Group Army, which they regarded as the number one enemy, as evidenced by the fact that they forbade the garrisons of the eastern fortress group to leave their posts and fight against the United Nations without permission (to prevent any more fortresses from being exploited by the Anti-United Nations), and at the same time sent no less than 100,000 troops to the east to "suppress bandits" and sent elite permanent divisions as the vanguard

With such a strong strength, even Xu Xiangqian, who had always been bold, did not dare to shake it, but just when he decided to lead the army to withdraw to North Manchuria, the cold wave from Siberia suddenly moved south, and the minimum temperature in the Jiamusi area plummeted to below -30C, and the number of people suffering from frostbite and even frostbite in the army suddenly surged, but this made Xu Xiangqian change his initial plan

Xu Xiangqian considered that more than ninety percent of the officers and soldiers in the Anti-Coalition Army were natives of the Northeast, and the strength of cold resistance was definitely rare on Shijie, even so, there were thousands of frostbite in the team, so the devil's troops must be in a worse situation. On the one hand, even the coldest places in Japan are far from being able to compare with Northeast China, even in South Manchuria, which is relatively warmer. On the other hand, only more than 100,000 people in the Kwantung Army have spent at least one winter in the Northeast, and most of the rest were transferred after the spring of 38 years, and they have not experienced the horror of the cold winter in the Northeast at all, so the frostbite of the officers and men of the Kwantung Army, especially the officers and men of the 4th Kwantung Army, who were sent to exterminate the main force of the Anti-Japanese Federation south of the Songhua River, will only be more common than that of the Anti-Japanese Union

1-2 sets of leather hats, leather jackets, and leather pants were purchased before the war, and at this point, North Manchuria, which has a low degree of development, has more advantages than South Manchuria because of more wild animals. The two traditional magic weapons of the cold season, chili pepper and spirits, have long been stockpiled a lot, and at the same time, Beiman also has a special product with strong ability to keep out the cold - one of the "three treasures of the Northeast", Wula grass, which is dried and fladdled into shoes. It is far warmer than any kind of rubber shoes and leather shoes, and can avoid frostbite on the feet, which can be imagined to improve the army's winter marching ability.

In addition, as early as the eve of Gao Yuan's trip to the Northeast, Hu Weidong specially invited Wu Xian, a first-class biochemical, medical and nutritional scientist in China and Shijie, to design a set of "Guiding Opinions on Cold-resistant Diet" specially applicable to extremely cold weather. Among them, it is particularly worth mentioning. He suggested that the diet of the officers and soldiers of the Anti-Japanese Union should be as salty as possible, although this will greatly increase the chance of cardiovascular disease in their old age, but it can also greatly enhance their ability to resist cold, for soldiers. The conquest in the present is far more important than the longevity in the future. As for salt, although it is not produced in the North Manchurian base area, it has long been bought from the Soviet Union in sufficient quantities as reserves, and from this point of view, the Anti-Japanese Union has been able to develop so rapidly for more than a year. It is also directly related to the fact that it opened up the communication route with the Soviet Union and thus broke the total blockade of the Japanese army.

Perhaps due to the general short stature in history, the Japanese attach great importance to all methods that can enhance the physical fitness of their people, and even do not hesitate to "borrow" seeds from foreigners for this purpose, so that physical exercise and nutrition and hygiene will not affect the purity of the bloodline. In the case of nutrition, Japan promulgated the Public Health Center Act as early as 1937, which is relatively early among the major powers. However, because the current theory of modern nutrition is far from mature, even potassium, a nutrient that is extremely demanding, has not yet been discovered to be necessary for the human body. Therefore, the level of nutrition work in Japan is naturally not much higher, and it is very difficult to serve ordinary people, let alone design nutrition programs specifically for soldiers, let alone special diets for cold zone warfare.

In contrast, the proportion of nutrition in TCM is actually quite large. Although the theoretical system is not as systematic as modern nutrition, many of its conclusions have strong guiding significance until the 21st century, not to mention that modern nutrition has just begun to start. Even more sophisticated than those nutritionists trained by Western medicine. It is only because the Chinese medical circles during the Republic of China generally admired foreign countries and only saw the shortcomings of traditional Chinese medicine in the treatment of infectious diseases and surgery, and most of them completely denied it. Even those who support TCM only try to compete with Western medicine in the treatment of diseases, but they generally ignore the uniqueness of TCM in other fields other than "health preservation" and other treatments.

However, Hu Weidong, who is from the 21st century, is very aware of this, and with his encouragement and guidance, the famous Chinese medicine practitioners and their young disciples in the border region began to shift the focus of their research to health care and autogenous diseases (i.e., diseases that are not due to foreign pathogens, but due to the problems of the human body itself, such as tumors, cardiovascular diseases, etc.). The idea of Taizu's "integration of traditional Chinese and Western medicine" has made Wu Xian and other modern nutritionists shine, and they have drawn useful knowledge from the theory and practice of traditional Chinese medicine

All these factors led to the fact that "our army is very difficult, but the Japanese army is even more difficult." He made full use of the favorable conditions of the cold winter in the northeast, and let the tens of thousands of elite soldiers under his command put on the snow camouflage uniforms that had been prepared before the war (in fact, they were military uniforms made of white cloth, and there was no difficulty at all, in addition, because the frozen Songhua River was also covered with snow, so that the Beiman base area could use a similar method to send supplies to Xu Xiangqian's main force, Both safety and efficiency are much higher than before the snow. ), stealthily evading the aerial reconnaissance of Japanese aircraft, unexpectedly penetrated into the depth behind enemy lines, cut off the contact between the Japanese 1st Division and the follow-up troops of the 4th Army in one fell swoop, and formed a front and rear flanking attack with the main force of the Anti-Japanese Union that was facing it head-on.

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