The story of gold and jade outside, and the shattered catkins inside has been around since ancient times.

Seeing that the Japanese could not take them away, they directly used explosives to detonate the artillery fire that could not be repaired and used later is similar to the reason why the gold and jade were eroded and shredded.

It seems not a big problem on the surface, but the hidden cracks caused by the explosion penetrate into it.

The repair of the Blacksmith House can only repair surface distortions and so on, and there is nothing to do with these hidden cracks.

When the artillery fire is used, it will produce extremely powerful chamber pressure. These cracks that cannot be repaired will become time bombs in the artillery. I don’t know when the chamber pressure may cause a burst of the chamber pressure to exceed its tolerance limit!

This is why Gai Heiliang firmly opposed the use of the 92-step cannon after repairing it.

Of course, although this 92-step cannon cannot be directly repaired and used, it still has extremely high value for Gai Heiliang!

When Zhang Ran arrived at the back mountain, Gai Heiliang was shirtless and lying on the cannon, constantly measuring various data. On the table next to him, there was a thick stack of paper, all of which were collected from the 92-step cannon...

Seeing this scene, Zhang Ran smiled knowingly!

In history, Gai Heiliang is famous for imitating the artillery fire of the Japanese. It seems that even though the trajectory of history has shifted slightly because of his own arrival, Gai Heiliang is still imitating rather than developing artillery fire, and there is still no change.

"Captain Zhang, Niu Da, you guys sit down first. I'll come after I finish my work!"

Seeing Zhang Ran coming, Gai Heiliang said, and then continued to work on his own affairs.

"Dog god, this is a bad thing, you'd rather blow it up than give it to us. It's so hateful..."

Niu Dacheng Dongshan and others cursed in disappointment, their eyes were red when they looked at the cannon fire - because they have truly experienced the battlefield and seen the power of real artillery fire!

Therefore, the greater the power of the artillery fire they felt, how heartbreaking the soldiers were for being bullied by the Japanese with cannons!

Now I finally found a cannon that I could still use, but it couldn't be used. I felt so uncomfortable...

"Captain, do you think we can use the method of shooting grenade barrels to fire this mountain cannon?" Niu Da looked at Zhang Ran and asked with a gaze.

Zhang Ran looked at Gai Heiliang and said, "What do you say about Gai?"

Niu Dao rolled his eyes in a state of dismay. After finishing his work, Gai Heiliang came over and said unhappily: "Mr. Niu, I have told you that this mountain cannon is not the same as the grenade launcher - the grenade launcher will not produce any pressure at all, so you can use it by hand to shoot the cannon, but the power of the bullet when the cannon is fired is no less than the power of directly squeezing explosives into the cannon... If you use hand to shoot a real cannon, you are seeking death..."

"I haven't tried it, how do you know it won't work?"

Niu Da bulged his eyes and said, "I think you can't believe in the technical level of our sheet metal workshop!"

"The cover is an expert, listen to the cover!"

Zhang Ran saw Niu Da's expression busy comforting him, and at the same time he was a little puzzled. He thought that Niu Da was not tall but had always been generous. He had been in the detachment for more than a year and had fewer faces when he was blushing. Why is it like taking guns and medicine now?

But thinking about it, he felt relieved again!

In this battle, thousands of casualties in the detachment were killed and injured, and I was filled with evil fire. Who among the detachment, wasn't the same as me?

Not to mention that when he was conquering Dingzhou, Niu Da also went to the battlefield by himself, watching the militia soldiers around him being blown to pieces by the Japanese artillery fire, and he also used his scalp to resist the Japanese artillery fire!

The battlefield is so miserable that Niu Da is afraid that it will be as uncomfortable as possible, so he tried his best to get out the detachment's own cannons as soon as possible, so that the soldiers could use the detachment's own cannons to fight against the Japanese cannons, instead of being able to bite the bullet and get bombed...

Now that I saw that a fairly intact cannon cannot be repaired, the method I could think of using manual cannon barrels was rejected again...

Niu Da’s mood naturally cannot be better!

Seeing Zhang Ran supporting Gai Heiliang's opinion, Niu Da knew that his ideas were no longer possible to be implemented. After saying hello to Zhang Ran, he left angrily...

"Captain Zhang, it's not that I don't want the soldiers to use their own cannons. It's really not possible to follow Niu Gong's method!"

Gai Heiliang explained to Zhang Ran: "The cannon barrel made by his method is probably easier to explode than repairing this cannon... If the soldiers die at the hands of the Japanese, they are martyrs, and they will die at the gun we made ourselves. How unfair do you think that would be?"

"Work, no need to explain, I believe in your professionalism!"

Zhang Ran nodded and then asked: "This time, have we seized three tanks from the Japanese? Apart from one of them, aren't the remaining two removed? Can we modify the tank guns on it?"

"That will work!"

Hearing this topic, Gai Heiliang became excited: "The two tanks that were destroyed by us were all incendiary bombs. Although the barrel of the tank gun showed signs of annealing due to the high temperature and its strength was slightly weakened, it did not have structural damage...

I am already thinking of a way to ask Master Niu to find a way to requench the barrel and increase the strength, and at the same time, I am also studying a suitable gun rack!"

Before Gai Heiliang finished speaking, Mao Zhun and Cheng Dongshan interrupted: "The development of artillery shells is already underway. Our ammunition department and workshop 2 are already in progress. We can definitely get the shells out before the tank gun is modified successfully. However, if our tank gun is modified successfully, we can use the shells we produced ourselves as soon as possible..."

"So quickly!"

Zhang Ran said worriedly.

Because the head of Tang, who was surnamed Tang, escaped regardless of his butt, Pingtong Pass had completely fallen. Now the detachment base has become a real enemy-behind base!

In this battle, due to the cooperation between the detachment and the division headquarters, the Japanese dealers had more than 20,000 Japanese dealers at Pingtong Pass than in history - this is not considered the Imperial Army!

Even if it is not compared with history, it is directly considered to be the battlefield damage, and the Japanese are directly reimbursed by the detachment and division headquarters. There are more than 10,000 people who are repaid by the detachment and division headquarters. Just when the Jinxian Temple floods the Seven Army, the Japanese are nearly 5,000, and no more than 1,000 people escaped...

Zhang Ran is sure that the Japanese detachment is absolutely tiring to hate such heavy casualties!

Now, the Japanese have just controlled Pingtong Pass and are still actively garrisoning and have no time to pay attention to him. But once the Japanese have gained a foothold here, Zhang Ran is sure that the first thing the other party has to deal with is the detachment!

Although the strategy of fighting behind enemy lines is guerrilla warfare, it is to use the advantages of the mountainous areas to deal with the Japanese instead of blocking positions and preventing them from giving up.

But the Cangshui Dongjiang is the foundation of the detachment. If the Japanese really want to attack the base, even if the detachment knows that it cannot defend, it will still try to defend it and will not give in to the base area!

Otherwise, nearly 300,000 people from the two counties in the base area of ​​the Jindong Detachment would probably lose confidence in the detachment!

Now, this war between the Japanese detachment and the detachment is imminent!

Although it is definitely not as powerful as the battle between Pingtong Pass, Zhang Ran believes that it is even more tragic than it is!

If there were a few cannons in hand and when facing the Japanese again, Zhang Ran would obviously have more confidence in this battle than before...

"Don't worry, Captain, we will do our best!"

Gai Heiliang and others obviously had a clear understanding of the situation facing the detachment. He nodded fiercely when he heard this, indicating that he knew it.

"I can only thank you recently!"

Zhang Ran patted the shoulders of several people and then asked about the details about the tank gun.

The tank gun was dismantled from the tank, and the gun body was very long. In order to adapt to the use of the tank, the gun body carried a lot of components and was extremely heavy!

I heard that in order to bring the tank gun back intact, it took more than twenty people per tank gun, and it took seven or eight days to carry it back.

At that time, people could still be carried by people, but if they really wanted to fight, they couldn't continue to let the militia and militia carry them on their shoulders!

If the tank gun is remodeled, the detachment can only use these two cannons. If they can only be used as turrets, then their practicality will be too poor, and it will be a waste of resources...

"Didn't our base build the Dongcang Highway?"

Zhang Ran said: "My idea is, can we make full use of our highway and build a tractor? When the cannon itself is modified, we also consider this factor. If the Japanese really come here, we will use the tractor to pull the cannon along the highway, move to fight, and maximize the power of the cannon..."

Fortunately, the people present were all technical workers such as Gai Liangcheng Dongshan Hair Diamond, rather than military experts.

Otherwise, hearing Zhang Ran’s words would be shocked!

Extending the maneuverability of artillery fire and adopting mobile combat is a combat method that artillery soldiers will only adopt decades later. In the current era, artillery warfare is proposed to also be mobile combat. This combat concept seems too advanced in any case!

The reason for this is of course the reason for technology.

Because of the artillery fire, even the 92-step artillery that is famous for its lightness and flexibility, like the one placed in front of Zhang Ran, it has two hundred kilograms!

With such a heavy self-respect, it is impossible to operate mobile operations - because at present, transportation does not support this at all.

But for the detachment, the traffic problem was solved because of the main line of Dongcang Highway - this is also the basis for Zhang Ran's proposal of the tactical concept of artillery mobile combat.

Of course, it has a lot to do with the detachment not having much power machinery now!

The detachment originally had two car engines, many motorcycle engines, and now there are two tank engines...

Originally, these power machinery needed to support the mechanized production of the workshop, but since the steam engine was established, these power machinery could only exist as auxiliary power. If it is tight, it can be used to modify it as a tractor...

Once these two tank guns that could be used in the fastest way, Zhang Ran believed that the effect would not be less than the help that ten or eight-goal cannons could not be mobile...

"Yes, why didn't we think of this?"

Although he is not a military expert and does not know how advanced the tactical concept of artillery maneuver warfare proposed by Zhang Ran is, Gai Heiliang and others are not fools. They immediately understood the benefits. They stomped their feet excitedly and immediately began to summarize to achieve Zhang Ran's idea, and there are still problems that need to be overcome!

In terms of tractors, Xu Kunjun naturally needs to cooperate with this.

Although building a car is a difficult task, this kind of tractor car plays a more mobile role, and does not need to consider comfort or otherwise. It is easy to solve with a power machine.

However, if the gun needs to cooperate with the tractor, it must do a lot of work in modification. For example, the gun rack must not only be able to cooperate with the tractor at any time, but also take into account the stability of the shooting and other factors...

In short, the project volume is very small!

But even though he knew it was as difficult as a mountain, Gai Heiliang and others still patted their chests and assured Zhang Ran that they would definitely complete the task and even die, they would chew off the hard bone that made the cannon move!

However, although modification of tank guns is an urgent task, Gaihei is still imitating the Jiuer Mountain Cannon!

After all, now he already knows that Zhang Ran spared no effort to develop the military industry of the detachment. What he wanted was not self-sufficient in the detachment, but to make the military industry of the detachment benefit the entire Eighth Route Army, and even all the anti-Japanese teams that dared to rise up and stand up to fight the Japanese!

With so many teams, it is impossible to replenish the artillery fire by dismantling the tanks from the Japanese tanks - that's simply unrealistic!

And if you can imitate the Japanese artillery fire by yourself, it would be different...

The core problem that restricts imitation artillery fire is still in the barrel!

Not to mention that the detachment itself does not have a steel industry at all, even Yan Laoxi and Chairman of the Steel Industry, the quality of the gun barrels they manufacture is far from meeting the standards. Often, dozens of shots will be fired, and the gun barrels will be scrapped!

This is also the fundamental reason why Chinese soldiers not only have no air superiority when facing Japanese devils, but also can only be beaten in terms of artillery fire!

As for the detachment, now it can't even create a gun barrel that can be scrapped after dozens of rounds, so how can we talk about imitation?

"Mr. Gun, your top priority now is to modify the tank gun. Put all your thoughts on not only modifying the tank gun, but also adapting to the mobile combat I mentioned!"

Hearing Gai Heiliang's complaints, Zhang Ran smiled slightly and said, "As for what you said you want to imitate the Japanese guns, but you don't have the ability to create gun barrels - I'll find a way!"

"Captain, have you figured out a solution?"

Gai Heiliang saw Zhang Ran's old god's expression and was immediately overjoyed: "What's the solution? Tell me quickly..."

"I will naturally tell you after you complete the task I assigned you now!"
Chapter completed!