At this point.

In front of everyone is.

A stone chamber that covers an area much larger than any of the stone chambers above.

Li Yuan secretly estimated that the area of this place seemed to be as large as that of the whole forging workshop. It was hard for him to imagine that it was only more than one month since the founding of the forging workshop.

Can make this look.

Although it looks a little rough, there are already what should be in it.

More than a dozen forging furnaces slightly smaller than the outside, as well as long chimneys chiseling through the cave walls to the outside, and a smelting furnace in the center of the stone chamber, are burning a raging fire at this time, and on the top platform, craftsmen are paying taxes to the top of the smelting furnace barrel by barrel.

This is why as soon as people enter the door, they feel that there is still a trace of moisture in the heat wave.

Around the smelting furnace, ingenious craftsmen even dug some forging holes. Some craftsmen were bowing and carefully beating these things that were only the thickness of their thumbs. Some people even put small furnaces on the platforms one by one. At this time, they squatted next to the furnace and worked with sweat.

This is the first time that people have seen such a strange scene. At first glance, they can't help being surprised.

"I said, alchinnon, what are these people doing?"

Cheng Yaojin couldn't help asking.

Yuchi Gong was the one who personally led the army to catch them back. At this time, he stood with Cheng Yaojin. Obviously, they are not fools. Cheng Yaojin has been stationed in Longyou road all year round. Naturally, his reputation has already spread to all parties in the western regions.

Seeing Cheng Yaojin's words, alchinnon instinctively gave birth to a trace of fear and hurriedly said: "This stone chamber is the secret of forging the fire gun, and there are more than 30 kinds of organic expanded parts, each of which is extremely precise, and some are even as thin as white paper, so it is quite troublesome. Five people here are the top locksmiths of Datang, and these people have a clear division of labor and work one by one. Look at this."

Alchinnon introduced it in detail.

As like as two peas, the trigger was pulled from the forging stage and a linkage buckle. "This thing is small, but the difficulty of making this thing is the biggest and most important component in these things, just like the trigger trigger of a strong crossbow."

As arkinnon explained one by one.

Li Yuan and others looked very excited, excited and worried.

They are worried that Zhang Feng chose to let these Outland people participate in such a confidential thing. Why not choose this native Datang people?

In case of an accident, or these people secretly send such Confidential things abroad.

Wouldn't that bring big trouble to Datang?

Think about it.

Li Yuan's look was not indifferent.

Taking the opportunity, Yuchi Gong whispered, "go quickly and get Fengzi for me!"

Yuchi Gong naturally knows what the old man is worried about at this time. If he doesn't ask clearly, it's difficult for everyone to feel at ease. What's more, there are Yu Shinan and Wei Zheng here.

This thing.

Once revealed, it will be fatal to Datang.

Before entering the cave.

Yuchi Gong always thought that this cave was nothing more than a forging room dug to save time.

But only when he saw what was here did Yuchi Gong completely overthrow the idea in his heart.

If this thing had been put in the west, it would have been fucking found.

Before these things go to the battlefield, it is estimated that the news has leaked out.

At this time, he could better understand why Zhang Feng stabbed the Mitsubishi army first and refitted those bows and crossbows first, followed by spears, and so on.

These things turned out to be Zhang Feng covering for the fire gun!

This thing is the key, and so is the cannon. Even if there are spies, he can detect everything, but he can't really detect useful news, such as

Something that can be forged in this underground forge.

Especially this fire gun, even if he can know the general appearance and so on, but how can he make it without the parts drawings made by Zhang Feng?

This is also the magic of Zhang Feng.

He almost divided these drawings into countless pieces, one for each person. In this way, almost everyone has a different confidential part.

Even if a lawless person steals one of them, it's useless. The most important thing is that Zhang Feng is waiting for them to steal.

This fire gun is nothing else. As long as there is a problem with one of the rings, it will be scrapped if it is light, and it will be directly blasted if it is heavy. If other people are allowed to make this thing on the test bench, Zhang Feng would like him to make it quickly.

Zhang Feng said he would give him dozens of cars of gunpowder.

Once he explodes.

hey!