After the matter was discussed, although the ministers still had a few things to put forward for the empress to deal with, everyone's focus had already deviated.

The matter of gunpowder is too important, and all civil and military officials know its importance, so at the moment of dispersal, Lin Zifan was surrounded in an instant!

The Ministry of Industry, the Ministry of War, the Shangshu, the Squire, etc., almost surrounded Lin Zifan and did not let him leave......

"Lord Lin, if you have any orders, please be sure to bring them up, and we will definitely handle it for you!"

"That's right, Lord Lin, our military department, from now on, will take your business as the first priority, and will definitely do it beautifully as soon as possible!"

"What kind of excitement are you in the military department? To make gunpowder, it should be the full cooperation of our people from the Ministry of Industry, Lord Lin, you say yes?"

"What did you say? Your Majesty has said, let us cooperate with the potential of the two ......."

"Lord Lin, dozens of people from top to bottom of our military department, and even the Zhenbei Second Army, Zhennan Fourth Army, and Zhendong Fourth Army currently stationed in Chang'an, are all sent by Lord Lin!"

"You...... Lord Lin, all the officials of our Ministry of Industry, as well as all the craftsmen and personnel under their jurisdiction, all listened to the instructions of Lord Lin and promised to complete all tasks!"

Before Lin Zifan could speak, the people from the Ministry of Industry and the Ministry of War had already quarreled, and there was even a tendency to fight if they disagreed, which made him speechless for a while.

Fortunately, he could roughly understand the eagerness of the officials of the two ministries, but the problem was ...... Mother, it doesn't seem like you need such a big battle to make gunpowder, right?

Gunpowder is actually divided into many kinds, and even in the later period, there is any TNT, but that, Lin Zifan doesn't understand, in fact, what he wants to do is the oldest in Chinese history...... Black powder!

Black powder is a thing that is easy to make and the materials are easy to find, so it is not difficult to make, and because of this, Lin Zifan, who graduated from high school, is sure to make it......

Of course, the premise is that these materials can be found in this world, and there is no difference between them and the Earth before they were crossed......

And there are only three main materials for making black powder!

The first one, saltpeter, that is, saltpeter to make ice! This thing does not need to be deliberately found, although Datang can not say that there is a lot of saltpeter, but there are definitely a lot, just look for the Ministry of Industry to come over and use it directly.

The second, charcoal...... Not to mention this thing, in this era, even in the palace, charcoal is burned, it is not too easy to want......?

It's just that it takes time to want too much at once, but Lin Zifan doesn't need too much in a short period of time.

The third ingredient is sulfur, which was not uncommon in ancient China and could even be bought in pharmacies.

Sulfur is similar to realgar, both are 'sulfur' substances, and they are both one of the traditional Chinese medicines in traditional Chinese medicine, and they are both poisonous...... Well, that's right, it's toxic.

Sulfur is generally used externally, but there are also internal uses, but few people dare to use it in this way, as for realgar...... Realgar wine to understand?

However, to make black powder, you need sulfur, not realgar!

Of course, the sulfur used to make black powder does not need to be eaten, it is just ordinary industrial sulfur, but the problem is ...... Datang also has no traditional Chinese medicine, let alone the habit of eating sulfur or anything.

Therefore, if you want to make black powder, the biggest problem is to find sulfur!

Sulfur is different from saltpeter veins, which can be used by digging out saltpeter directly, and sulfur needs to be determined by the situation.

If it is a sulfur vein with high sulfur content, it can be used by directly crushing, but if the content is low, it needs to be heated and slightly refined to remove impurities or something.

At the same time, there are several ways to obtain sulfur, such as sulfur that occurs naturally after volcanic eruptions, or sulfur ores mined from sulfur veins.

But in any case, these things are definitely not available in Chang'an City, and they must be found outside.

"As for you being so active, then the official will ask you to help find a necessary material!"

Lin Zifan shook his head and smiled: "Liu Shangshu, there are many masters in the military department, so I will hand over the slightly more dangerous things to your engineering department, is there a problem?"

"Naturally, it's no problem!" Liu Shangshu slapped his chest: "Our military department, which one is not from the battlefield? Dangerous? It's just as ordinary as eating and drinking......

She said this with great confidence, but it made Lin Zifan embarrassed......

What kind of women are these people, fighting one by one is like eating and drinking, and all of them come down from the battlefield......

"In that case, please ask Liu Shangshu to send some people to the vicinity of the erupted volcano to find a yellow stone, or crystal!"

"In terms of nature, these crystals are more like saltpeter than stone, but the color is pale yellow or dark yellow, and the details are ......."

"Looking for stones, similar to saltpeter?"

Although Liu Shangshu was puzzled, he also firmly remembered the various details and identification methods that Lin Zifan said.

It wasn't until Lin Zifan paused that she said: "Lord Lin, there is no problem with this, but there are no volcanoes in our Chang'an, as far as I know, there are in the West, but it takes a lot of time to come and go......

"How long will it take?" Lin Zifan was stunned.

Liu Shangshu thought about it for a moment, and said: "According to the general speed, it will take about half a month, and even if it is fast, it will take about ten days! If the search is not smooth, the time will be even longer......."

Lin Zifan glared instantly, my task is only seven days, and you told me that it will take more than ten days, how can this be done?

Frowning, Lin Zifan said: "Use the flying vultures, go to find and collect as fast as possible, the first batch doesn't need too much, but at least bring me a bucket or so!"

"Okay! Let's do it!"

Seeing that Lin Zifan was in such a hurry, Liu Shangshu immediately said that there was no problem and hurriedly took people away......

"Then we ......" The people in the Ministry of Industry led by Qin Shangshu had expectations in their eyes.

"What you're looking for is also the same material called sulfur, but it's not going to the volcano to look for it, it's similar to the saltpeter mine, looking for sulfur veins as far away from us as possible!"

"That's fine, but time ......"

Qin Yafan was a little embarrassed, looking for a vein is similar to looking for a needle in a haystack, if it is unlucky, it is difficult to estimate the time......

"Early tomorrow morning, I'll set out with you to find it!"

After Lin Zifan pondered for a while, he said that he would also go in person.

I can't help it, I'm really not at ease!

If they find no brimstone in seven days, won't they finish the calf?

At the very least, Lin Zifan is more familiar with sulfur and knows better where it is more likely to find sulfur veins.