In Japan, women have no place in society. The reason why the Kubota family would let a girl come to Shanghai to do business is that the children of their generation are all girls, and Yoko Kubota is the most shrewd and capable of the three sisters, and the short one chooses the general, and as a result, she was selected by the current president of Kubota and her father, Haru Kubota, from a female student who has just graduated from school to become Kubota's agent in China.

Kubota's presence in Shanghai originated from a letter of advice from Toshiichiro Koizumi to the emperor. The letter of advice was about the development of the imperial military industry, and he finally made a suggestion that since the purpose of the imperial invasion of China was to obtain colonies in order to obtain resources and cheap labor, it was suggested that the imperial treasury should take precautions and immediately implement a resource raid plan in China. One of the measures he proposed was to collect Chinese steel products on the spot and then send Japanese companies to digest and produce military supplies on the spot to meet the imperial military operations in China – a measure he characterized as "feeding the war with war."

Since Koizumi was hired by Yamamoto as a senior adviser, he drafted a number of admonitions, but most of them were thrown into the toilet as poop paper by the bigwigs of the Japanese military department, and this admonition was one of the few bigwigs who saw it, so it was sent to the emperor's case, and then there was the initiative of Kubota and other Japanese military enterprises to open offices and even factories in China.

With the support of the Japanese base camp in policy, and the help of the Japanese military, secret service organizations, and traitors, Jiang Yunyan, the chief representative of Kubota's Shanghai office, returned to Shanghai, and the Shanghai branch of Kubota immediately began to select a site to build a factory. Then, Kubota's headquarters shipped several sets of production lines from Japan, sent more than a dozen technical backbones, and Kubota's Shanghai office was officially put into production. The first product to be launched is a new diesel engine, which will be used to replace the gasoline engines used in Japan's active Chinese tanks, thereby enhancing the secondary survivability of these tanks.

The first diesel engine at Kubota's Shanghai branch had just rolled off the assembly line, and Ouyang Yun learned the news that night. "The Japanese are so good at learning! Zhilu Dao replaced the gasoline engine with a diesel engine," he said to Hou Debang at noon the next day when he and Hou Debang were eating a working meal in a laboratory of the R&D Institute.

Before Hou Debang joined the Cadet Army, he was just a chemist, but later, because he was responsible for the development of all the cutting-edge weapons and equipment of the Cadet Army, with the help of Ouyang Yun's handheld computer, he has now become an all-round scientist who is proficient in the top techniques in various fields. After taking two bites of rice, and then pushing the plate away, he said: "Compared with the gasoline engine, the advantages of the diesel engine are obvious. Diesel engines are not only more powerful, but also less prone to explosions. However, as long as our rockets are successfully developed, the Japanese will be able to strengthen their armor and artillery paths, and when they fight against our Jiguang tanks, they will still only be passively beaten. Ouyang, I heard that our missile test has attracted close attention from the United States, the Soviet Union, Germany, and other powerful countries. If this technique is leaked out, once it is mastered by the Japanese, with their industrial level, I am afraid that it will form a super combat power in a short period of time, and then we will fall into passivity. ”

When the Air Force of the Cadet Army carried out the "capsizing" operation and secretly attacked the Japanese Guards Division that had come to Taiwan's aid, it tried two missiles, one of which shot down the Type 99 fighter piloted by the invincible "Kaga no Eagle" Yamabe River Sankey. Although they will not go to the front line, as long as they are invented, it will inevitably have an impact on the battle situation, and even change the outcome of a battle. The successful development of the missile made the cadets of the research and development institute feel very proud, and their voices reached Hou Debang's ears, and he could not help but feel very worried when he heard that the United States, the Soviet Union, and Germany were trying their best to develop missile technology.

No matter what kind of weapon it is, because it must be controlled by a person, it is a double-edged sword. When in the hands of one's own people, you can certainly give the enemy a head-on blow, but once you are mastered by the enemy, you can also hurt your own people. Hou Debang only presided over the preliminary research and development of the missile, and later handed it over to Dai Yongqiao and a group of young people. Dai Yongqiao: After all, they are young, and they only see the improvement of the combat effectiveness of the cadet army brought by missiles, but they ignore the deeper problems.

Ouyang Yun thought so, and he said, "Old Hou, your worries are not unreasonable. It is not realistic to put missiles into actual combat at this stage, and exposing our strength too soon will certainly provoke a reckless counteroffensive by the Japanese. Good steel should be used on the blade, for the time being, the follow-up test should be as low-key as possible. Originally, the helicopter's loading weapon and rocket pod must have it, but now it seems that it is better to give up first. ”

Ouyang Yun came to see Hou Debang today for the helicopter. Since it was already certain that the Japanese would launch an offensive on an unprecedented scale against the Cadet Army, the only way to fight it to the death was to fight it. Originally, Ouyang Yun wanted to show all the secret weapons and give the little devil a big surprise, but considering the worst result of this battle, he didn't dare to take this risk - the student army was born to resist Japan, and a decisive battle with the Japanese was only a matter of time, and the student army was all gone, and Ouyang Yun would not regret anything. However, once they were defeated, the new weapons and core skills were acquired by the Japanese, and instead made the Japanese stronger, this result was not what he wanted to see. In that case, he, Ouyang Yun, would definitely become a first-class sinner of the nation, and he would die without turning a blind eye.

The development of the helicopter has been going on for more than two years, and the first prototype has been flown dozens of times and modified dozens of times, and is now able to be used for short-distance rapid deployment of troops and support for ground operations. The prototype's standard loading was two machine guns, a cannon, and two rocket pods. However, considering that the rocket pod may cause misunderstandings and make those with ulterior motives associate with the cutting-edge weapon of missiles, Ouyang Yun can only give up.

Hou Debang disagreed with him, he said: "The rocket rebalancing must not be abandoned, if the rocket rebalancing is abandoned, the helicopter will be too vulnerable." You forget, as early as in the defense of Renqiu, our L-19 was equipped with rocket pods, and it achieved quite good results. I don't think we're going to be wary of it, but it's confusing them. Hehe, wouldn't it be good if they thought missiles were rockets?! ”

Ouyang Yun thought about it and agreed with Hou Debang's statement, and then they began to discuss where to build the factory and how many technicians they would recruit first to ensure how many helicopters could leave the factory every month.

- Yamamoto Fifty-six and Koizumi Tonichiro didn't realize that when they were trying to persuade the base camp to launch a general attack on the Xuebing Army, Ouyang Yun was already secretly preparing for battle.