PS: Bow and thank Lao Wang @ for the two monthly passes, thank you! Thanks to the second monthly pass that began in 2006

The first submachine gun was released, and the industrial park entered a process of rapid development. The underground workshops, which have been idle for most of the time, will be filled with new car beds in a very short time. And the refitting of the Dongku troops can be completed in two months at most, and this is still because of the wreckage of those tanks and artillery, so that the steelmaking furnace has food.

The second half of the second batch of equipment and the soldiers and technicians who came with the car were not many, less than 20,000. At this point, most of the mature warriors on Crescent Island have arrived, and the last batch of soldiers to come with the equipment will not exceed 20,000, that is to say, the number of 90,000 soldiers who can come on Crescent Island will complete the smuggling, and all of them will add up to 40,000 technical personnel will also be in place.

In five days, the third batch of equipment will arrive, and the steel pipes, which Christian has informed Dong Ku again, will arrive in ten days, that is, at the beginning of March, the steel pipes will be in place.

Dong Ku no longer worries about the production of weapons at this time, the smelting furnace will be in place in these days, and the steel will also meet the throughput of the steelmaking furnace within a month after the furnace is tested.

At this time, he devoted all his energy to the development of artillery shells. He personally discussed with the thirteen Jewish artillery experts day and day, instilled his ideas in them, and devoted himself to the development of anti-aircraft artillery shells.

Those Japanese-made anti-aircraft guns had a slow rate of fire, a firing range of no more than 8,000 meters, and low strike accuracy, which was not conducive to air defense.

Now, the fragility of the industrial park is not generally low, and the large equipment that is exposed to the ground cannot be protected by concrete due to the severe cold, and as long as the bomb falls, even if it does not directly hit the target, the equipment will be damaged by shock waves or shrapnel fragments, so air defense is the top priority before the arrival of June.

Based on the slow rate of fire of the Japanese 75 anti-aircraft guns. With the drawbacks of a short firing range, Dong Ku focused his efforts on shells. At the end of World War II, in order to adapt to the air defense of aircraft with faster and higher speeds and higher altitudes, anti-aircraft artillery developed grenades, incendiary bombs, fragmentation incendiary shelling and armor-piercing shells, as well as proximity and time-delay fuses.

Against thin-skinned Japanese aircraft. Inlaid steel balls and near-explosion are the best choices, as there is no need to study the armor-piercing effect, and even a steel ball with a diameter of one centimeter can easily tear open the shell of the aircraft.

Are these Jewish artillery experts in David? After they arrived on the island, the second wave of power generation was received, and there were several people who had quite deep attainments in this area, and through the data and explanations given by Dong Ku, they admired it, and quickly understood the essence of it, and Dong Ku was expecting it. In just two days, the design scheme of inlaying steel balls and making them evenly shot was taken out, which amazed Dong Ku, an "expert" who only knew the data but could not solve the problem.

At the same time, these clever Jews also added a fuse for delayed detonation, and the design would be a nightmare for all thin-skinned aircraft at an altitude of three to six thousand meters. There. It will be an impassable exclusion zone, even if it is vertical. It will also be destroyed first and then fall.

In this way, as long as they are tested, in a maximum of ten days and a half months, new anti-aircraft shells will appear. It will be a nightmare for Japanese aircraft, who are already sitting in a barrage of steel balls of mobile anti-aircraft guns on trucks, how much to come. How many fireworks will be in the air.

At the same time that Dong Ku succeeded in designing anti-aircraft shells, the flamingo drawings that had already arrived in Berlin were sent to the aircraft factory.

After meticulous research by hundreds of experts, they were all amazed by this design, and the cost was not high, at best, it was a hundred thousand dollars. It is not more expensive than domestic fighters.

With the approval of the data, the manufacturing of the prototype began. It is believed that in less than five days, a new Zero will meet the world in advance.

When the Japanese officials who have already been notified learn that they are ready to observe the prototype, they will inevitably look forward to it. It's just that they don't know what to do, and the planes they exchanged for steel pipes and some gold cannot dominate the skies over Harbin, and it is even difficult to survive, but they have regained their dignity in other battlefields.

Dong Ku stood guard in the distance of a concrete basement where the cannonballs were secretly developed, and he was waiting for the cannonballs to come out, eager to know the effect of the cannonballs.

There will be 10 prototype shells, which will be used to collect various data during the subsequent shooting.

At this moment, the guard whispered a few words to Dong Ku, which surprised Dong Ku, who was standing in the room waiting for the result.

"Air strikes?"

Air raids were unlikely in this season, and after 38 years, in order to adapt to flying in the bitter cold, not only the cabin was sealed, but also electric flight suits appeared, and at that time, long-distance flights could only be achieved in low temperatures below 30 degrees, and now, it is clear that bombers cannot appear.

"Let the Twin Cities verify, and observe visually!"

After pondering it, Dong Ku ordered in a deep voice.

Ten minutes later, Dong Ku received a call that a plane had indeed flown over the sky near Shuangcheng and was heading for Harbin.

"How did they do it?"

Dong Ku is very strange, he already has an electric flight suit in this season, and he doesn't dare to let those pilots fly in the air, the training is all take-off and landing taxi, and he has not left the runway, even the hundreds of fighters and bombers in the cave are the same, except for training pilots every day, they do not take off into the air.

"Conceal all anti-aircraft fire, no artillery fire!"

As soon as Dong Kuluo groaned, he gave instructions to Harbin.

In his opinion, hearing the sound of airplanes, but not seeing the group, this should be a reconnaissance plane flying at an altitude of more than 5,000 meters.

Sure enough, less than two minutes after his order was issued, news came from Shuangcheng again, and the observer on the top of the mountain saw the plane, it was a two-winged plane, and the altitude of the flight was difficult to judge, about three thousand meters.

I'll just say it......

Dong Ku is mentally steady. If a large group of Japanese planes takes off now, it will be a disaster for Harbin. Once the Japanese army discovered the wooden cage houses and the steaming and hot gas rising here, then only two parallel bombers were needed to raze the ground here, and the protection was too fragile.

However, he also knew that even if it was civilized, it would not be too late to strengthen the protection, so it was especially important to destroy the plane before it arrived.

The roaring planes aroused the curiosity of the people of Harbin. The defenders were instructed not to show their air defenses and not to disturb the population, so the planes at lower and lower altitudes did not cause panic. Instead, the children were running down the streets, shouting in a half-foot-long air, "Airplanes! Plane! "It's not good to be excited.

When the plane tentatively descended and circled, when it found that the ground had not launched an attack, it boldly lowered its altitude and circled over Harbin at an altitude of only three or four hundred meters above the ground.

"Kojima-kun, look, the two anti-aircraft guns there haven't moved. Could it be that the people of China didn't know how to operate anti-aircraft guns? ”

While operating the plane, Jiro Kojima in front of him scraped the frost on the glass with a small shovel and said: "Supposedly not, their artillery skills are so powerful, how can no one control the anti-aircraft gun?" I think, let's not be careless, we can go back, my hands are already frozen, and it will be troublesome to land for a while. ”

"Then we'll go back, and the photos have been taken."

The Japanese pilot in the back chimed in. Then call Xinjing Airport and ask to return.

Their call is clear, and Dong Ku can certainly know the way. Hearing the plane leaving, Dong Kuzhi said that his time was running out, and since the other party's plane was able to take off, it showed that there were already preparations for an air attack.

"Director Wang. When can several lathes of the gun barrel be installed for trial production? Dong Ku put down the phone and asked without looking back.

A month ago. Wang Yihai, who was secretly driven to Harbin from Shanghai, had studied artillery manufacturing in the Czech Republic for five years, and had a very mature artillery manufacturing technology and research ability. I came to Harbin in the cold weather.

After arriving, he talked to Dong Ku in detail for more than an hour, and Dong Ku confirmed that he had mature experience, so he made him the first director of the artillery factory.

Hearing Dong Ku's question, Wang Yihai replied without thinking: "The No. 3 boring machine will be assembled tomorrow." The No. 1 and No. 2 boring machines are too large, and it will take three days, and the 75 caliber barrel can be picked up after the installation of the No. 3 boring machine, and the process of the lathe has been completed. ”

"So you'll be able to see a barrel that can be assembled the day after tomorrow?"

"Yes, to be precise, if there are no mistakes, we will see the first installable barrel tomorrow night."

"Good!"

Dong Ku praised and said: "We are running out of time, the Japanese planes have already taken off, and it is difficult to guarantee when they will launch an air attack." ”

"I know that the workers are spinning in a row, and they haven't closed their eyes for two days and two nights at the longest." Wang Yihai's eyes were also red, and he replied calmly.

"Work hard, we have a little more certainty, otherwise, even if there are shells inlaid with steel balls, the density of the artillery is still not enough."

Wang Yihai understood what Dong Ku meant, if he couldn't do air defense, their park was like a hard-boiled egg with an eggshell, which could be swallowed by flies at any time. In the past month, he has already learned that this is the foundation of the Harbin station, even if the front line can block the Japanese offensive and destroy all the artillery of the other side, but the hail of aerial bombs in the sky loves the nightmare of a building position without cement, and here, it is even more vulnerable.

"You can rest assured, within ten days, I will get all the scheduled barrels in place and assemble 100 anti-aircraft guns and 200 twin machine guns."

"Good! You are a hero of Huaxia! I'm so proud of you! ”

Dong Ku reached out and shook Wang Yihai's rough hand, and said sincerely.

"The heroes don't dare to be heroes, just to defend their homeland."

Wang Yihai felt Dong Ku's sincerity and said sincerely.

"That's right! We are here to defend our homeland, and the word hard work is exempt!! ”

Dong Ku said with relief.

As soon as he finished speaking, a voice suddenly sounded.

"Captain!"

Dong Ku looked back and saw that it was an engineer in charge of the manufacture of cannonballs, who was excitedly holding a cannonball and standing at the door.

Dong Ku's eyes lit up and blurted out, "It's out!?" ”

"It's out!"

The engineer nodded heavily.

Dong Ku looked at the several Jewish engineers following behind him, and waved his hand excitedly: "Go!" Let's witness the birth of a miracle! ”

The group excitedly walked out of the house and walked to the shell test site.

"Reloading completed, elevation angle fifteen, delay fuse two thousand meters!"

Hearing the shouts of the 75 anti-aircraft artillery in the distance, Dong Ku shouted loudly: "Release!" ”

With the repetition of the order, there was a bang, and the shell smoothly came out of its disembowel, drew a small arc, and flew towards the impact point at a distance of two kilometers.

Rumble!

In the light of a fire. A large cloud of smoke rolled in the air. The cannonball successfully exploded in the air!!

"Yay!!"

Everyone cheered excitedly as it exploded. This shows that the delay fuze has passed!

Immediately afterward, a call came from the data logger who was hiding in the bunker near the point of impact.

Dong Ku put down the phone, turned his head to look at the people who were looking at him, and said expressionlessly: "The steel ball has pierced all the test plates, cheers!" ”

"Whew!!"

People who thought they had failed cheered thunderously at this moment. A new high-performance mass killer was born in their hands.

At this moment, air strikes are already a joke. How could they not be excited?

Tomorrow, after the production of the barrel of the new 75 anti-aircraft gun, here will be a large hedgehog, a large porcupine, with spikes on its body that will pierce all large birds that dare to fly.

At the same time that Dong Ku successfully created an air defense mass killer, Hulin was already full of troops.

From the beginning of the attack on the border, the operation of the entire state apparatus allowed more than 200,000 troops to march to Lake Baikal in a steady stream, leaving behind cavalry along the way. The army went straight to "Darenevchensk" and "Izbesk".

At this time, especially in "Izbesk", the warehouses there, because they were not blown up, were once again being used, hoarding supplies for the war and preparing for battle.

The Siberian artery has been swallowing around the clock for more than ten days, and trains are full of soldiers and supplies. Rush to the border.

Vladivostok and Suifenhe were also bayonets and bullets loaded at this time. They are all ready, and once the battle order comes, they will cooperate with the tiger head and attack the three forks.

Within two days of returning to Hutou, Xing Yuan saw the big move of Soviet Russia. The secret whistle he had left in the snow outside the country kept sending back news, the silent artery was running, the horse team stretched for miles, and the snow had been trampled flat.

"More than 50,000 people?"

Xing Yuan looked at the telegram in his hand, and his face was calm. Fifty thousand. Not enough for him to stuff his teeth.

"More than 100,000 people?"

He looked at the second message, which had only been separated by two days, and his heart moved. 100,000 is already a lot, plus the original 30,000 or 40,000, there are already about 150,000 troops here.

"More than 150,000 ?!!"

While Dong Ku and the others were cheering, Xing Yuan received the third message. He was moved. 150,000, far more than his less than 100,000 troops here, and the telegram said that there was still a steady stream of trains arriving, wooden cage houses were being built all over the mountains, the military camp surrounded all the railways from "Izbesk" to "Dalenevchensk", and the cavalry from the Mohe direction to "Izbesk" was also gathered, and the possibility of leaving the country to fight was almost zero, and they had to be forced to retreat to their hiding places and were driven away from the railway line.

"More than 150,000?"

Dong Ku, who was excited, looked at the message handed by the guard, and his heart moved. Lao Maozi is going to open up the momentum, I'm afraid I can't wait for civilization, maybe when the temperature warms up to 20 degrees, that is, in April, I will do it, otherwise, the army will eat empty for several months in a row is not the Soviet Russia, which is not rich, is willing to bear, the only way is to feed the war with war.

Xing Yuan has the same judgment, although there is a fortress, but the defense line of hundreds of kilometers along the line, he has less than 100,000 in his hands, plus the nearly 100,000 troops there in Godan, the defense is not strict.

"Oh yes! Don't you even leave some time for Lao Tzu!! ”

Dong Ku cursed hatefully in his heart, and said with a smile on his face: "Director Wang, I will arrange a room to stew salmon, eat caviar, eat venison, celebrate, and go all out to trial production of shells in the afternoon, and the test will be carried out synchronously, and the delay will be accurate and there will be no accidents." ”

"What a shame! I'll arrange it. ”

Wang Yihai saw Dong Ku's expression frozen in an instant, and knew that he was leaving the park, so he promised and said: "There will be no mistakes in the work here for the time being, and I will report the data to you after the test firing of the new anti-aircraft gun." ”

"Okay."

Dong Ku was not verbose, and added: "The thirty-two trucks are directly installed with new anti-aircraft guns, and priority is given to installation." ”

"It's good."

Wang Yihai replied calmly.

Dong Ku didn't participate in the still excited crowd, and he quietly left the park with the guards.

Nearly 200,000 troops approached the border, he had to deal with it carefully, at this time, he was more urgent to need troops, the number of people, although the island came nearly 100,000 elite soldiers, but it was still not enough, defending Soviet Russia, there was no strength to attack Changchun. (To be continued......)