The situation in Nanjing was not optimistic, and even if there were forged letters from Chen Xiu, it would only increase the number of troops by one-third. Because strategically speaking, there is no way to defend Nanjing. The devil can easily besiege Nanjing and then take it.

On the Purple Mountain, artillery fire roared and gunfire rang out.

Tang Hu's face was already black marks, and there were even some blood stains.

The devil's artillery fire kicked up the dirt, and every little bit of dirt was also powerful enough.

The devil's attack was very fierce, and Zhou Wen did not treat Tang Hu and them specially, since he wanted to stay and guard Nanjing, he was desperate and had to defend it.

After losing another grenade, Tang Hu nested in the trench.

A grenade flew out and exploded in the air, and the devils who were attacking were also attacking.

"Big brother, the devil's attack is too fierce, if this wave of attacks can't be suppressed, I'm afraid I'm going to rush up!" Zhao Youde said loudly.

"Get the devils closer, grenades ready. It's risky, but it can keep the devil down. Tang Hu's eyes were bright, responding to Zhao Youde.

Zhao Youde understood what Tang Hu meant, that is, to put the devil closer, how close is it? About 30 meters. It's just that this time they can go a little farther away, because they are in the mountains, and they naturally have the advantage of height.

At this distance, if you don't control it well, the devil can rush into the trench!

But in terms of firepower, they really don't have an advantage.

"Yes! Brothers! Let's get closer! In a moment, let the devils taste our bombs! Zhao Youde shouted loudly, and then someone passed the order over one by one. On the battlefield, there is the sound of guns and cannons everywhere, and if someone doesn't give orders, I'm afraid that many times, they will not be able to hear clearly.

"Yes!"

This kind of tactic is not uncommon on the battlefield in China, and it is also the experience of blood and tears of soldiers. The Chinese soldiers lack weapons, especially heavy weapons, and they have been pressed by the devils to the point that they can't raise their heads, and there are machine guns and other firepower to suppress them, so they have no choice but to find ways to inflict damage on the devils.

It can be said that the grenade has exerted great power on the battlefield in China.

"Kill, give!"

"Kill, give!"

Seeing that none of the Chinese soldiers in the trenches showed their heads, the Japanese army was also excited, as long as they took the trenches, they would definitely be counted as the first merit of their squad!

Soon, a squad of Japanese soldiers rushed over with a shout.

Although he rushed over, he still held his gun, and from time to time, he still shot at the trench and suppressed the fire.

Until the devil is about 40 meters away from the trench, this 40 meters is the diagonal distance, not the horizontal or longitudinal distance.

"Kill!" Tang Hu threw out a grenade, and then roared angrily.

"Kill!" The crowd did the same and threw the grenade.

Hundreds of grenades were thrown at the Japanese squad that rushed up.

"Yalu! Take cover! Take cover! The Japanese squad leader shouted loudly and quickly lay on the ground.

The devils around him reacted and immediately lay down.

However, their reaction was a little slower after all.

Hundreds of grenades emitted huge successive explosions, "Boom! ”

"Boom!"

"Boom!"

"Brothers, fight!" Tang Hu shouted again, picked up the pistol, and shot at the devil. At this time, the distance is close, and if you don't seize this opportunity, the devil will still rush over.

"Da Da Da!" Several bullets were fired into the dirt in front of Tang Hu, and Tang Hu hurriedly retracted into the trench.

The grenade just now should be able to cripple this devil squad, but they are not without losses. The devil wants to rush the needle, and the devil's machine gun must be swept in the rear, so several fighters fell under the devil's machine gun.

The captain of the Japanese squad took advantage of the gap to get up and look around, his eyes were desolate, his own team, unexpectedly, there were only more than ten people left! None of the others got up! Either they can't get up anymore, or they fall to the ground and wail.

After another glance at the firepower above, the Japanese squad leader had to retreat.

But they are only a temporary retreat.

……

When Chen Xiu woke up, he was a little dizzy and shook his head, he only knew that yesterday, the equipment had arrived.

Getting up, Chen Xiu saw that Tang Ning had already gotten up and was training the soldiers outside, although the people and soldiers had a good meal yesterday, the only difference was that the people drank alcohol, but the soldiers did not drink alcohol, because they served as guards.

Chen Yifu sat in the courtyard, looking at the scene outside, his eyes were soft, they were all young Chinese boys! They're all good guys! Chen Yifu really wanted to praise a few words, but now that he is practicing, it is not suitable to praise.

In this era, China did not have its own infantry drill code, so most of the training was also learned from other countries, and sometimes, it was only in shape.

It's a loss, the training of the Tiger Battalion, Chen Xiu had let Tang Ning grasp it before, and in terms of discipline, it was much better than other troops of the Independent Brigade. Since Tang Hu stayed in Nanjing, the training of the remaining soldiers was also started by Tang Ning.

Chen Xiu walked outside and stood beside Chen Yifu, "Dad, morning." ”

"Well, why didn't you go to practice?" Chen Yifu glanced at Chen Xiu and said dissatisfied.

"I have a specialization in the art industry, I am not that material, in the future, I will slowly hand over the power in the army to Ah Ning." Chen Xiu looked at Tang Ning and smiled, "I don't want to restrain her." ”

"Huh." Chen Yifu shook his head, "Money, is it enough?" ”

"Well, it's enough for the time being, but it's still enough, the more the merrier." Chen Xiu replied with a smile.

"Come in with me, you." Chen Yifu stood up and walked into the house with Chen Xiu.

Chen Xiu followed up, only to see Chen Yifu sitting on one side of the table, and at the same time, he poured two glasses of water, probably knowing that Chen Yifu wanted to have a good discussion with him.

"Sit down."

Chen Xiu sat down.

"My father asks you, how do you plan to build this arsenal?"

"It's about building houses and recruiting people."

"Can you find the source of the minerals?"

"I have already contacted the garrison army of Luoyang, there is a large iron mine over there, and the garrison army has taken the lead to buy iron ore. At the same time, I also sent people to Baoji and coal mines, and there was no problem. ”

"It's enough to have a production line, and it's not just iron, you know?"

"Yes, there are lead mines, aluminum mines, etc. in Hanzhong, although the quantity is not large, but it is enough to produce guns. If it's really not enough, then continue to look in Shaanxi Province. Shaanxi, there are Qinling Mountains, underground, the junction of the two tectonic units of the Yangtze plate in the Qinling tectonic mountain belt, such a junction, generally speaking, will be rich in minerals. ”

"Where's tungsten?" Chen Yifu hit the nail on the head, since the dock was discovered, the earliest, used as a filament for incandescent lamps, moreover, high temperature resistance, not easy to melt.

To build a gun, iron alone is not enough. The moment the bullet is fired, there will be a lot of heat, and if it is fired continuously, then the barrel will be hot. Without the right materials, the gun may soften and deform.

Most of the existing guns are made of tungsten steel. Tungsten steel has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., especially its high hardness and wear resistance, which remains basically unchanged even at a temperature of 500 °C, and still has a high hardness at 1000 °C.

Chen Xiu was silent, "Tungsten ore is mostly not available in the north, and Jiangxi, Hunan and other places are rich, so the child has sent someone to negotiate over there and buy it back, but fortunately, the amount of tungsten ore is not large." ”

"Jiangxi, Hunan?" Chen Yifu frowned, "Do you know that Jiangxi and Hunan are thousands of miles away from here?" ”

"Yes, but this place is not far from the origin of iron ore and coal mines, and there is more Han water on the side, and the production line requires a lot of electricity."

"Hydropower?"

"Yes!"

"Who's there?"

"The child will do it himself." Chen Xiu said lightly, as a medical student, but also a science student, high school physics, learning is not bad, when he took the college entrance examination, the science comprehensive test was a full 290 points! The reason why there is no perfect score is that the creature deducts points.

Chen Yifu nodded, "How can the funds be turned?" ”

"Supporting industry with medicine." Chen Xiu replied.

"Good." Chen Yifu was satisfied, after all, his son still had some considerations, and then took out a stack of deposit tickets from his pocket, "Here, it is a deposit ticket of 5 million oceans, and it is Leo who bought most of the medicines you left before, of course, the medicine for cancer has not been sold by my father." ”

"It's right not to sell." Chen Xiu nodded, "Regarding cancer medicine, at present, it should be the most detailed I know, if there is such a patient, father, you had better persuade him to come to China for treatment." ”

"Okay."