The site of this test-firing of iron cartridges was chosen by Jiang Wei in the wasteland near Zhong Nanshan, where there were no villages and towns and no people.

Even so, Jiang Wei cautiously observed the mountain for a long time before deciding to start the test launch.

The test-fired iron cartridge Jiang Wei did not contain TNT, but chose a combination of soil and nitrocellulose propellant with the same specific gravity. The main reason was that the explosion was too loud, and this time the main test launch was only to experiment with the firing range and distance, so there was no need to use TNT explosives.

Li Wen and Li Wu paid attention to the movement nearby, and Li De came to Jiang Wei's side with an iron frame cart. This cart is designed for the railroad tube, similar to the missile launcher in the previous life, but this is a miniature version of the human-powered railroad tube launcher, and the launch also requires someone to ignite the lead, everything seems relatively primitive.

"Childe, when will the fire be lit?"

Jiang Wei looked around,

"Let's light the fire, try the range first."

Li De nodded, although he didn't quite understand what Jiang Wei was going to do, but he still did as he was told.

In a moment, a sharp scream resounded in the sky, and after Li De lit the fuse, he saw a flame erupting from the buttocks of the iron bullet barrel, and it flew out in the blink of an eye, and the sharp sound frightened him to sit on the ground.

Fortunately, Jiang Wei reminded him not to be directly behind the railroad cylinder, otherwise he would be sprayed by the flames of the railroad cylinder at this time, and he would have to be disfigured.

The two brothers Li Wen and Li Wu in the distance heard the voice, and they also turned their heads and looked curiously, seeing that the novelty that Jiang Gongzi had made again could fly, but they didn't know if they could take someone to the sky?

Jiang Wei was also shocked when he saw it, he stood on the small hillside, and finally the iron cartridge fell to the ground, but the effect was not very ideal. He stuffed a lot of nitrocellulose, but the result was not as good as it should be, only about three thousand meters away.

This range is comparable to that of the Ming Dynasty's artillery.

However, considering that the railway tube adds up to almost 300 catties, and it can have a range of 3,000 meters, it doesn't seem too bad.

Then came the accuracy test, retracting the cartridge, changing the propellant, and igniting it again. Jiang Wei was a little disappointed by the accuracy, the deviation was a little large, and he would turn halfway to fly, and he was about 300 meters away from the target, and sometimes even 500 meters away. This is all biased to grandma's house, and it can be said that there is no accuracy at all.

The power is there, the range is there, but the accuracy is too different. This weapon is only suitable for large-scale operations, and it can be put into tens of thousands of troops, which does not require precision. If you want to hit the target accurately, I'm sorry, I'm an iron cartridge with ideals.

"Childe, do you still try?"

Li De seems to be addicted to playing, he has never seen such an interesting thing since he was a child.

Jiang Wei saw it and sighed.

"Don't try, go back."

Although the result was unsatisfactory, it was also the world's first thermal weapon. Compared to black powder, it is 60 times more powerful than TNT.

As for optimizing accuracy, Jiang Wei does not have this ability.

Li De went back to the cement factory, and Li Wen also went to organize people to go deep into the mountains to find caves. Jiang Wei did not go back to Xu's Mansion directly, but took Li Wu to the suburban mansion.

Jiang Wei looked at the ten TNT cartridges and felt that it was time to give Princess Shahr an explanation. However, it will never be free.

At this time, Princess Shahr was staying in a rented house, and these days, she was still in torment, and the morale of the Persian guards who followed her to the Tang Dynasty was getting lower and lower.

After learning from the merchants that the Great Eclipse had encroached on more than half of the land of Persia, it might not even be long before it invaded the Persian capital, Ctesiphon.

For this terrible news, because of the anxiety in her heart and the urgency, she has been sick in bed for more than ten days.

Princess Shahr didn't know how long Persia could hold out, and she didn't know how long Jiang Wei would need to help them Persia. She looked blankly at the beams,

"Princess, the messenger has sent someone."

Alder, a middle-aged man from Persia, banged on the door, his voice full of joy.

Princess Shahr did not seem to come to her senses, and when she heard Alder repeat it a second time, she suddenly woke up, sat up, got out of bed quickly, and opened the door.

"What do you say? The Divine Messenger has sent someone? But the oracle of the gods of the East? Where are the people? ”

Princess Shahr said a lot of questions in one breath, and at this time she couldn't care about any gaffes, Alder's eyes were moist, and he looked at this princess who was running for the country, and Princess Shahel, who was desperate, was just a sixteen-year-old girl, and he felt a sour and gentle voice in his heart,

"Princess, the messenger of the Eastern God, the person sent by Jiang Wei, is now in the living room."

When Princess Shahr finally confirmed it, her eyes were rosy, and she finally waited. Jiang Wei did not forget them, and Persia was saved.

Princess Shahr ceremoniously changed her clothes and came to the living room. In the living room, it was Li Wu, who was sitting there drinking tea.

When Li Wu saw Princess Shahr, he went straight to the point, but Li Wu made an opinion, that is, it was better to bring more people and prepare more than three trucks.

Shahr nodded and had no opinion, but he didn't understand what the truck needed to do, and Li Wu didn't say it explicitly.

"Does the oracle have anything else to say?"

Li Wu shook his head,

"A certain prince only wants Princess Shahr to come over as soon as possible."

Even if Jiang Wei didn't ask for this, Princess Shahr would rush over as soon as possible, she only hoped that she could save Persia and the people of Persia as soon as possible.

Shahr thought for a moment,

"It's just that I don't know how to go, can I bother you to take us there."

Li Wu smiled,

"This is natural."

Soon, Princess Shahr instructed Alder to mobilize the fifty Persian guards who remained in the Tang Dynasty, and the carriage she was riding in was driven by Alder himself, and she set off with five wagons and left Chang'an City, which provoked many people to watch curiously.

When Princess Shahr came to the suburban courtyard, she took Princess Shahr and Alder into the courtyard, while the other guards were left at the door.

Shahr guessed all the way, how Jiang Wei saved Persia and what immortal weapon was used? After all, the reputation of the immortal disciples of the immortal family is now in full swing, and even the princess of Persia is amazed by the immortal weapon.

Therefore, first of all, she thought of using immortal weapons to save Persia, but what kind of immortal weapons and what power they possessed, her limited brain was completely blank, and she couldn't figure it out.

After Li Wu took Princess Shahr to Jiang Wei's courtyard, he didn't retreat, closed the door, and guarded the door.

When she saw Jiang Wei sitting on the chair with the familiar white hair and an indifferent face, Princess Shahr saluted Jiang Wei with the highest Persian etiquette.

"Honorable Messenger of the Eastern God, we meet again. As you said last time, when you get a response from the great Qinglian Sword Immortal God, you will contact us, I would like to ask if you have already received a response from the great Qinglian Sword Immortal God? ”

Jiang Wei felt a little awkward when he heard this, but he still nodded and did not correct Princess Shahr's words.

"I have already received a response from my master, he spent immortal power to make ten immortal weapons, and the name of the immortal weapon is called Divine Punishment."