After finishing the arrangement of the greeting and entertaining Mr. Chen and his party, Yang Tianfeng plunged into aviation manufacturing and made every effort to transform aircraft, train air combat, and train personnel.

Although the strategy of using siege instead of attack by the Japanese did not threaten the base area, there were still some arrangements during the siege, which made Yang Tianfeng realize that another war would soon unfold in the air.

Jining and Xinxiang are all building airports, deploying planes so close to the base area. In addition, Xuzhou Airport can even think of the targets that the Japanese army will target with their feet.

At that time, the Japanese North China Front Army was equipped with the First Flight Regiment, which had 36 heavy bombers and 27 reconnaissance aircraft, 12 fighter jets and 18 light bombers. The number seemed to be quite large, but it was not the most advanced and best fighter jets.

Of course, it is more than enough to use these aircraft to bully the enemy-behind armed forces behind the anti-Japanese enemy, and very few war damage occurred. However, in the battle with the New Seventh Army, the Japanese army in Xuzhou suffered several setbacks, making the Japanese army unable to figure out whether it was their own planes at the base or from Xinyang and other airports to assist in the war. Therefore, they did not dare to act rashly, were reconnaissance, inquire, and were also preparing for revenge.

Yang Tianfeng's strategy was to endure and ignore the tentative and harassed attacks of Japanese reconnaissance aircraft. As a result, although this has won development time and made it possible to make the counterattack suddenly and fiercely. However, as the Japanese army became more and more courageous, they are likely to launch air strikes on the base areas to destroy the military industry and other industries in the base areas and to hit the morale of the military and civilians in the base areas.

The air battle will take place sooner or later, and Yang Tianfeng is just waiting for the "Air Force" to grow stronger and more favorable combat opportunities.

The network of ground air raiders has been established, and air raid shelters are becoming a common means of avoidance for the people. The debugging of radar has ended and operation has begun. The maturity of these conditions has increased Yang Tianfeng's confidence and realized that the time for air combat is becoming more and more mature.

Now, the manufacturing and assembly of the second radar are underway, and the modification of the aircraft is also progressing smoothly. A group of National Army pilots have come to the base area to conduct adaptive flight training for the new aircraft.

The modification of the aircraft was smoother than originally estimated, reaching six aircraft in a month. Because many lines on the original aircraft could be used, which greatly shortened the modification time. With the increase of workers and the proficiency of technology, efficiency can continue to improve.

The development of a mechanical two-stage two-speed supercharger is coming to an end, and the performance of the aircraft will be improved. Even the current flight performance is highly appreciated by the pilots who have passed it.

How to make full use of these pilots before they finish training and return to the rear, and hit the Japanese hard, is something that Yang Tianfeng is thinking hard about. Because air combat must be carried out in the base area, even if the aircraft is damaged, the pilot has a great chance to escape.

Based on this consideration, we cannot passively wait for the Japanese to repair the airport and deploy the plane. Yang Tianfeng wants to take the initiative in his hands, lead the Japanese aircraft to the base area, and then use radar detection to launch a prepared attack.

The Japanese did not have radar, so this was a fighter jet that could be used. At night, they attacked the airport and bombed several planes to anger the Japanese and lured them to take off from a further airport to bomb the base.

Speaking of night flight, it is a performance that even the Japanese planes do not have. However, under Yang Tianfeng's planning and preparation, the "Air Force" in the base area is conducting urgent training to master this skill.

Early long-range flights mainly depend on compass. Once the course is correct, the time to reach the target can be estimated based on the airspeed and approximate wind speed. If the weather is clear, you can also use the starry sky to navigate, but most of the time, all the pilot can do is pray!

When the pioneers of flight challenged nature with fearless spirit, scientists and engineers fought hard in another field. As early as 1911, someone studied the directionality of radio waves. During World War I, the German Zeppelin used primitive ground radio direction-finding navigation when bombing London.

Yang Tianfeng used a navigation system that integrates technologies that are not preceded by the past, and is supplemented by radar detection and positioning, and performs deviation correction.

First, two radio towers that are very close to each other are built near the airport to transmit Morse codes with complementary phases. If these two codes are used with a point transverse system, when the aircraft is on the left side of the beam midline, the pilot hears the point, the horizontal side, and when in the center, the two signals are received at the same time, and when in the middle, the same-strong signal is heard without interruption.

This directional direction finding method is a blind landing system invented by German Lorenz. Its characteristics are that the airborne equipment is very simple, just a common radio receiver. Its disadvantage is that the transmitted radio beam is unidirectional and has no directional capability for other directions in 360 degrees. Therefore, it can only be used for guiding landing and very special bombing guidance, but not for ordinary aviation navigation.

However, with radar and radio on the plane, the aircraft has added a layer of support for the night flight. Through detection and positioning, the radar station can use radio to correct the deviated course of the aircraft. Moreover, what Yang Tianfeng asked for was a very special bombing guidance, and the target was set at the Japanese Xuzhou Airport.

Up to now, only Xuzhou Airport has a large number of Japanese aircraft, and has been continuously dispatched to conduct tentative and in-depth reconnaissance. Therefore, Yang Tianfeng determined the direction of Xuzhou Airport through the radar and locked the direction of the radio tower's beam transmitting.

At the same time, at dusk and then at night, Yang Tianfeng formulated a gradual night flight training plan for the Air Force, and began a intensive training formation of bombers composed of reconnaissance aircraft, biplane aircraft, and ultra-light* ash jets.

Moreover, Yang Tianfeng also dispatched reconnaissance aircraft many times without Japanese aircraft coming to the air, conducted road exploration surveys, familiarized himself with the terrain and landmarks, drew route maps, and set up ground guidance signs in the base area.

In addition, Yang Tianfeng also led military technicians to speed up the production of bombs for bombing. If it is too heavy or too large, the aircraft will definitely not be able to carry it, so don’t think of bombs such as the counter-runway. However, given the weakness of air defense caused by the arrogance of the Japanese devils, throwing it at an altitude of more than 1,000 meters can not only ensure the safety of the aircraft, but also cause as much damage as possible, so you must win by quantity.

How fragile the aircraft is, a shuttle or a grenade may be reimbursed. Therefore, Yang Tianfeng mainly produced a batch of small explosion combustion bombs with delayed fuses based on the load capacity of his own aircraft. The large ones are only three kilograms, and the small ones are only one kilogram, which is a dense one.

As for the size of the battle, Yang Tianfeng actually did not have much extravagance. He mainly lured the Japanese to retaliate and strive to fight an air battle in the base area. Moreover, it is best to be before July, before Lingdaner came to China.

Of course, the time should not be too early. It is best to shorten the time of the Hundred Regiments Battle to prevent the Japanese from concentrating their strength in the border areas of Shandong, Henan and Anhui too early. Therefore, he initially set the time of the air strike in mid-to-late June, and he should make more preparations in the past two months.

Yang Tianfeng is very busy, military, military industry, government affairs, etc. Although not every job has to be personally experienced and done, he can guide, review, listen to reports, etc., which takes up most of his time.

At this time, the group of overseas Chinese condolence groups from South China took a plane from Chongqing to Luoyang. After a brief visit, they arrived in Zhengzhou, then crossed the Yellow River, and entered the Shandong-Henan-Anhui Border Region.

In history, in the most difficult days of the War of Resistance Against Japan, in addition to the domestic people, there was also a pillar - that is, more than 8 million overseas Chinese.

Overseas Chinese have formed three major groups in their regions: the largest group, the South China Overseas Chinese. The number of people living in the South China countries is more than 6.7 million. The Nanqiao Association was established with Tan Kah Kee. The second group is mainly more than 100,000 American Chinese, headed by Situ Meitang, and is called the Hongmen Overseas Chinese in the United States; the third group, the European Overseas Chinese, mainly Chinese living in Britain and France, established with the All-European Overseas Chinese Anti-Japanese and National Salvation Federation.

These Chinese people who lived overseas, accepted the so-called marine culture, and were influenced by Western civilization, often adopted an impartial neutral attitude towards party disputes at home, and devoted their efforts to care for and support the "mother's family" in the mood of "marrying a daughter".

They believe that due to the feudal autocratic rule and fooling the people in China over the years, the ignorance of the people and the backwardness of scientific and cultural culture, the shameful reality that big countries are bullied by small countries and beaten by small countries. They fantasize that the Chinese people's heads can "open up" under the fierce bombardment of outsiders' planes and cannons - abandon the feudal autocracy that seriously restricts the nation's hands and feet, and truly accepts civilization and science.

Therefore, these Chinese people tightened their belts to support the War of Resistance. They had to support the War of Resistance with all their strength than the people in the country, and there was one additional condition, that is, the National Government, which accepted their economic support, must ensure domestic political democracy and freedom. Therefore, once there were disputes and frictions between domestic political groups, overseas Chinese were always heartbroken and ruthlessly reprimanded, and threatened them for not giving economic support. The Kuomintang's several anti-communist climaxes soon stopped, which was directly related to the opposition attitude of overseas Chinese.

In view of this situation, in the first period of the War of Resistance Against Japan, Chairman Chiang had to temporarily put down his stinking airs of his own party and his family and the world, announcing that all parties and factions were equal in politics, which once created the illusion of domestic democratic politics, which was a great comfort to overseas Chinese. They made clear declarations, paid all their money, supported the National Government's War of Resistance, and supported Chairman Chiang's War of Resistance to the end.

In the early days of the War of Resistance Against Japan, the National Government established a wartime public debt stimulus committee, with Chairman Jiang as the chairman. The first phase was issued 500 million yuan in national saving bonds, and overseas Chinese subscribed most of them. Later, whenever the National Government issued 30 billion yuan in national saving bonds, they all subscribed vigorously. From 1937 to 1942, the National Government issued 30 billion yuan in national saving bonds six times. Overseas Chinese purchased 1.1 billion yuan, accounting for more than one-third of the total.

Because Chairman Jiang regarded himself as a loyal believer of Mr. Sun Zs and under the banner of Democratic Republic, overseas Chinese basically bought his account. Under the National Government, a special overseas Chinese Affairs Committee was established. Chairman Jiang often asked for help from overseas Chinese through this committee. Overseas Chinese donations have solved many government problems, but Chairman Jiang suffered from the frequent war expenses and sent a telegram to overseas Chinese organizations in various places, asking them to make regular donations.

Common monthly donations mean a fixed amount of donations every month, just like the boss pays wages to workers, every month. Overseas Chinese do their best to pay anti-Japanese donations monthly, just like paying wages to the National Government on a monthly basis. The average monthly actual donation of overseas Chinese in Southeast Asia is: 7.34 million yuan; the average monthly actual donation of overseas Chinese in the United States is: 583,000 yuan: During the eight years of the War of Resistance Against Japan, the total donation of overseas Chinese was: more than 1.322.53 million yuan.

Overseas Chinese not only contributed money, but also contributed their efforts. In 1938, the Yunnan-Burma Highway was completed. This road became the lifeline of the motherland's mainland import and export during the War of Resistance Against Japan and was the main artery of the national war of resistance. However, at that time, there were very few sources of experienced truck drivers and car repairmen in China, and there was no time to train temporary training. The Southwest Transportation Office of the Military Commission, which was responsible for managing these two transportation lines in Kunming, actively recruited mechanics overseas.

Until May 1942, before the Yunnan-Burma Highway was cut off by the Japanese army, the Nanyang mechanics transported more than 450,000 tons of military supplies, greatly supporting the motherland's war of resistance. Among the more than 3,000 mechanics, more than 1,000 people sacrificed their lives for the country due to bombing, disease, car accidents, etc., accounting for more than one-third of all Nanyang mechanics returning to China. The hearts of overseas wanderers were so passionate and so noble and great when the national crisis was in the face of national crisis.

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"...To be honest, if it weren't for the strong demands of the government and the slightest curiosity of General Yang, who was traitorous and later heroes, we wouldn't have thought of going there. At that time, we wanted to go the Shaanxi-Gansu-Ningxia Border Region, which is said to be the most advanced place in China. However, this was the arrangement of fate and God, where I encountered things and people that changed my life..."

"... As soon as we arrived in Kaifeng, Zong Hui, deputy director of the border area, and others came to welcome us. The welcome banquet was relatively simple, but it did not change our impression. After all, the words and deeds in Chongqing can make outsiders understand our preferences."
Chapter completed!