Although several old workers have worked in the military factory all their lives, their sense of secrecy is not necessarily strong, or they don't realize that Chen Xu's propeller is a cutting-edge weapon coveted by various countries, and it is a top-secret weapon that cannot be taken out of the country.

From Chen Xu's explanation that this technology can be exchanged for Japan's advanced industrial equipment, a few old workers are not calm, for them the factory is a home-like storage, if the factory can obtain advanced equipment and add new tools, it is the greatest happiness for them.

In addition, Chen Xu repeatedly misled them, making the old workers think that the drawings were personally researched by him and had nothing to do with the country, so it was okay not to hand them in.

In the end, as soon as the six old fitters and Chen Xu and the seven of them were combined, they decided to build the propeller according to the drawings, and then take it to the Tokyo Industrial Fair to exchange good things with Little Japan!

As long as there is a little secret between men, the relationship will rise sharply, since there was an agreement between the six old workers and Chen Xu, several people have become year-old friends, and they often get together to talk about the world and the world in their spare time.

There are only forty days left to work, the processing must be too late, a few old fitters feel that the model does not need to use steel anyway, the steel will appear in the process of processing various deformations, and grinding is time-consuming and labor-intensive, not the best material to make a model. Several people discussed and finally gave two options: plaster model and wooden model, and now it is best and fastest to use two materials to make propellers.

Chen Xu thought that the propeller would be in danger of breaking if it was to be transported to Tokyo with a plaster cast, so the wood model became the final choice.

For fitters who play steel like pinching plasticine, grinding wood is really not too easy, even if the blade slips and cuts the wood, brush a layer of fine gypsum powder on the wrong place, and then polish it with sandpaper, and soon you can repeat the processing at the wrong place.

Therefore, compared with the production of electric fans, the processing progress of complex and huge propeller blades is faster!

Chen Xu has not been idle during this time, he has placed a large wide table in the spacious warehouse next to the car and used it as his office. The original workshop office was stuffy and dark, and he would rather stay in the warehouse to get fresher air.

In the large warehouse, Chen Xu accompanied the workers to work day and night, watching them build electric fans and polish propellers step by step.

Chen Xu copied down some cutting-edge designs of submarines in later generations from his memory, and by the way, he also took out the Soviet Union's military deployment in the western Pacific.

Chen Xu has his own set of methods for drawing design drawings, using the fast drawing method to draw the graphics of the parts with a few strokes, and then writing the material formula and processing technology, sometimes a drawing can be drawn in ten minutes, and the speed is very fast.

By the thirtieth day, five of the seven blades had been polished, and the propeller had been completed in a few days.

At this most stressful moment, the electric fan went wrong, and after all the parts were made, the patchwork fan would spin slightly. For the workers, this flutter is much milder and almost negligible than the older fans that were previously produced.

But in Chen Xu's eyes, the tremor caused by this mechanical resonance was a failure, and he urged the workers to quickly dismantle it to find the reason!

Just when everyone had no clue, Qian Junming, who was processing the propeller, was familiar with the propeller, and after observing the work of the fan, he determined that the blade shaft connection part of the fan blade was too thin, and only two millimeters thicker was needed to eliminate this resonance.

Everyone hurriedly followed Qian Junming's instructions and re-processed the mold, and after casting a new blade, the fan really didn't vibrate. When it turns, it only emits a low motor noise like a mosquito sound, and as for the wind noise, it is perfectly solved.

On the thirty-fifth day, the propeller was finally processed, and after inserting the seven blades into the base, the base was set on a large lubricated iron pipe, and then with a slight fluctuation, the blades whirred and whirred, without the slightest unstable trembling.

The grinding process is very superb, beyond Chen Xu's expectations.

The propellers were then dismantled and packed into wooden boxes, and five days later the Tokyo Industrial Fair was to be held, and everyone had to go to the venue in advance to prepare, and there was no time to do any more superfluous work.

As for the number of places to participate in the exhibition, it is not a matter at all, and Mr. Chen Hu is not to mention how happy he is after knowing that the factory is going all out to prepare for the Tokyo Industrial Expo. Personally called the head of the exhibition group, the old man and the head of the adult family really didn't dare to refuse, think about it anyway, it is to add an electric fan booth, it does not take up much space, and the name of the Southern Machinery Factory was added to the list of exhibitors.

It's just that the poor regiment commander never dreamed that there would be such a big conspiracy behind this seemingly ordinary electric fan, and he was shot purely while lying down. After the incident, the regimental commander was dismissed because of lax auditing, and the angry naval commander personally ordered the transfer of this goods to the headquarters, and the consequences of this person will not be mentioned here.

The weather was sunny and cloudless, and Chen Xu and others appeared at Osmanthus Airport in Pingxiang City. This time, the remaining eight exhibitors from Huxiang Province also arrived, ready to take a charter flight to Beijing together, and fly directly to Tokyo, Japan after refueling.

Going abroad is a major life event for people in this era, and the eldest brother Chen Weiguo originally wanted to go, but the factory was really busy with things.

On the contrary, Qian Junming and Zhong Jian, two old fitters, out of the need to maintain equipment and cooperate with Chen Xu to act in front of the Japanese, successfully took a hitchhiker.

Because there are only a few electric fans in the exhibition, and the propellers involve military secrets, there is no need to exhibit them, and there are too many people who are suspected of traveling with public funds in this small scene, so the three of them attended the expo as representatives of the factory.

When the plane was still in China, Chen Xu was not stable, for fear that the intelligence department of the Navy Headquarters would come out halfway to cut off his beard after learning about the incident. After all, the propeller is processed in broad daylight, and people come and go in the workshop every day, and the whole factory knows the storage of this propeller.

However, after the plane took off from Beijing Airport, Chen Xu's little heart finally settled in his pocket, and this time the pit day plan officially entered the actual operation stage, and no one could stop him.

Hearing Chen Xu laughing after the plane took off, the other members of the group in the cabin looked at him strangely, thinking that this kid was excited to go abroad for the first time.

Qian Junming and Zhong Jian, two old men, have stayed in Pingxiang City all their lives and have never been far away a few times. Suddenly going to such a far place in Japan made the two old men overwhelmed. In order to maintain the mysterious image of the three people, Chen Xu specially ordered a set of Zhongshan suits for the two of them.

According to Chen Xu's setting, the three of them were officers of the Naval Intelligence Service secretly sent by Beijing to contact Japan after the opening of the country and when the blockade of China had been lifted by the West, Qian Junming and Zhong Jian were responsible for impersonating officers of the Naval Intelligence Office, while Chen Xu acted as translators.

In fact, the two old workers only need to sit still as Maitreya Buddha, and everything is negotiated by Chen Xu, as an experienced intelligence officer, he has the means and methods to control the negotiation process.

"Xiao Wu, this time we pretend to be naval officers, what if we are found out?" When the plane arrived in the East China Sea and was about to enter Japan, looking at the vast sea outside the window, Qian Junming turned his head sideways and asked in a low voice to Chen Xu, who was sleeping by the window wearing toad glasses.

"My Uncle Qian...... Why are you so worried! As long as the three of us know the secret, who will reveal our identities? If the Japanese side wants to obtain information, it will inevitably try its best to keep this matter secret, because the Soviets and Americans are staring at them, and this is a major matter that will lead to fire if they are not careful, and no one will leak information lightly. ”

Chen Xu sighed, patted Qian Junming's shoulder, and signaled him not to think too much. The old man was slightly chubby, wearing a tunic with his hands behind his back, and he really had the taste of a big official standing there. It's just that the old man has been studying technology in the factory all his life, and he has never seen such a scene, so he was nervous all the way.

"Old money, you are a coward, usually in the factory you count you the most donkey, the factory director can't persuade you, now it's in shape! You guy has a hard shell, and he can't handle it. This time, as long as we can exchange the equipment and go back, the old factory director will give us the responsibility, and he will support you on it, what are you afraid of! Zhong Jian is very open-minded, this old man is a master who is not afraid of heaven and earth, not only did he not reject this kind of secret operation, but he was also full of interest.

The two old men didn't know that in Chen Xu's plan, the propeller was only part of the conditions for exchange, and he also prepared more information for exchanging with Japan.

And the two didn't know that the Soviet intelligence network roster that Chen Xu took out finally broke out two days before the departure of several people, and the Military Intelligence Bureau arrested the targets in various provinces at the same time with a thunderous force after more than two months of arrangement, and after the people were captured, all the officials of the sufficient level were warned, and everyone was silent.

It is conceivable that this large-scale and at the same time covert arrest operation will be a great deterrent to other foreign intelligence forces. At least during Chen Xu's stay in Japan, the intelligence networks of Japan and the United States would never dare to go out to investigate the identities of the three people during this sensitive period.

In fact, this action of the Military Intelligence Bureau is objectively supporting Chen Xu's plan, and in the eyes of the West, China's elimination of Soviet influence in China during this time period is an important expression of all-round surrender to the West. Chen Xu appeared in Tokyo at this time to contact the Japanese side for an important exchange of military secrets, Japan will definitely attach great importance to this matter, in order to win over China against the Soviet Union, in a certain way, the conditions for negotiations will be relaxed, as long as Chen Xu is not asking for a sky-high price, all the exchange conditions can basically be obtained!