Li Chao led three thousand riders to head north at night.

Along the road, people from the vanguard were sent to arrange the city, and all the accommodations were selected and the local officials were welcomed.

Outside Luoyang City, local officials came out of the city to welcome Li Chao and his party.

The General of the Suiguo, Duke Ren, the hereditary governor of Langzhou, and the Grand Governor of Duji Province, Liu Hongji stepped forward with a smile, "Thank you for your hard work in Zhao."

Li Chao got out of the horse and bowed to Liu Hongji. This loyal party, Li Shimin's confidant, has a much higher status than Hou Junji and Zhang Liang, and is Li Shimin's original qualification. In the past two years, he has been guarding Luoyang.

"I have prepared a welcome banquet in the city."

"Forget the banquet, I'm in a hurry. The troops will rest outside the city for a night. Just ask Duke Ren to provide some food and supplies." Li Chao refused with a smile, "By the way, I've sent someone here before, I wonder how much sulfur and saltpeter he had collected from Duke Ren to help me?"

Speaking of this, Liu Hongji asked in a low voice curiously, "Duke Zhao went north to resist the Turks. What do you want this sulfur saltpeter to do? Could it be that you want to practice the elixir?"

He still remembered that when he was conquering Liu Heita, Hebei, Li Chao also made white wine and white medicine in the army, but it was a great thing to bring back the dead. This time, Li Chao sent someone to collect sulfur and saltpeter, and said that the more you need, the better, the more you need, the more you need, and how much you need, which made him very curious.

Sulfur is a ignition-induced object, and saltpeter can make ice.

When he was in Chang'an, he once tasted ice made from saltpeter in the midsummer in Li's house, which was extremely magical.

Sulfur fires, saltpeter makes ice, it is both ice and fire, what magical elixir is going to make?

Li Chao smiled, "Well, sulfur and saltpeter plus some other things can make a very powerful magic weapon, which is effective on the battlefield. I want to resist the Turks this time, I am going to rely on it. I hope Duke Ren can collect more for me, as much as I want, the more the better."

"Can you create a magic weapon to break the enemy? How powerful is it?"

"Very awesome!"

"How powerful?"

"So that's it, you can throw lightning in your palms and throw lightning!"

Liu Hongji looked at Li Chao like a ghost, "If Duke Zhao wants to keep it secret, there is no need to say anything, and there is no need to say such things to coax me."

"I'm really not lying to you. Using sulfur and saltpeter can really create palm thunder and sky-shaking thunder, and even flying fire crows and meteor fire rain." Li Chao said seriously.

Liu Hongji was half-believing and half-doubting.

"It's really so magical. What kind of immortal spell is it? Why wouldn't it be better to open my eyes?"

"This cannot be used randomly. If it is leaked, it will not be so easy to use at that time."

"What kind of palm thunder, thunder of the sky, flying fire crows, meteor fire rain, etc., is this more powerful than the Eight Cow Crossbow and the Stone-Crossing Cannon?"

"If you use it well, it is definitely more powerful, and even when used together, it is even more powerful. However, even if you need sulfur and saltpeter, you can't control much if you don't have tens of thousands or tens of thousands of pounds."

"Thousands and tens of thousands of kilograms?" Liu Hongji took a breath. Sulfur saltpeter is not rice wheat. According to the stone, many of them have to be bought in pharmacies. There is no goods in the small shop.

"I took a lot of effort to get only a few hundred kilograms each. I thought it was enough, but I didn't expect that you would get thousands or tens of thousands of kilograms as soon as you opened your mouth."

Seeing Liu Hongji's not very enthusiastic look, Li Chao felt that he should open his eyes.

He had a batch of firearms in his hand, but they were all simple gunpowder weapons, without muskets and gunpowder. It is not easy to make gunpowder. Although everyone knows the formula, it is difficult to increase its power, such as purifying, granulating, wet, sieve and drying, etc.

Even a fire-start is a technical problem. It is not easy to use any shell, and it all has to start from scratch.

Li Chao was not interested in creating a spurt or a spurt gun. After all, it was small in power, but if he was asked to make a fire door gun or even a grenade gun, he would not have such ability for a moment. Just a barrel would be very difficult and could not be mass-produced, so he would be without birds.

As for making artillery, Li Chao was not interested. Without mature and stable technology, and with a mature enough production system, it would be a waste of energy before stabilizing the product. At that time, the range and power were not as good as those of the bow and arrow cannon. What should I do if I have to worry about?

However, gunpowder is useful, but it is still useful.

It is also OK to make some simple grenades. Although it may not have lethality, it is always easy to use to scare people and horses at critical moments. Make more gunpowder, install one or two coffins, dig a tunnel under the city wall, and then ignite a fire and explode it. This power can also achieve amazing results.

In short, even if the simplest gunpowder technology is well applied, it can still play a big role.

"It's better to find a remote place than Duke Ren, and you can see it yourself?"

"Okay." Liu Hongji was very interested.

Li Chao asked Wang Xuance to get some grenades and rockets, and then everyone rode their horses and found a place outside Luoyang City.

Liu Hongji watched Wang Xuance take out a black lump from his waist like a baby, which was very strange.

"What is this?"

"Part thunder." Li Chao replied.

Liu Hongji looked at it carefully and it was only about two pounds to buy, which was quite heavy. The bump was also quite strange. It looked like a small round hammer on it. It was made of wooden when you touched it, and there was a slightly smaller but longer handle below, which was also made of wooden.

"Two pieces of wood? Thunder in the palm?"

"The piece of wood above is empty, filled with prepared gunpowder, and there are some broken ceramic pieces and iron nails inside."

"Oh, how to use it?"

Li Chao took one and pointed to the lower end of the wooden handle first, "Is there a small bamboo tube here? When you want to use it, pull out the small bamboo tube first."

While talking, Li Chao pulled out the bamboo tube and exposed a piece of wire.

"What's this?"

"Special fuse." As he said that, Li Chao took a fuse from Wang Xuance and wrapped it around his left wrist first. This fuse seemed very simple, but it was not easy to make. It took Li Chao's efforts to make this fuse safe, and it also burned slowly and was not easy to extinguish.

A fuse wrapped around your wrist and ignite it, which will burn very slowly, but it is not easy to extinguish.

Li Chao took out his lighter, which was quite high-end. However, nowadays, there are basically one person with status in the Tang Dynasty, produced by Li Ji. It seems tall and high-end, but it is actually simple. It is just a flint firing and ignition, add an oil tank, fill the oil tank with silk floc, and then connect it with a special fire-pulling core, so that the oil will not be poured out, and the spark controlled by the flint is easily ignited as soon as it splashes on the fire-pulling core.

Although it seems simple, it is a combination of the fire sickle and fire skeleton, which is more useful and therefore is very popular.

"Light the fire on this lump, and then you can thunder in your palm?"

Li Chao was still introducing the fuse, but Liu Hongji was fine. He opened the lid of the grenade in his hand and then put the wire at the end to the lighter he was playing.

The specially processed thunder in the palm of the palm sparked sparks.

"It burned so fast!" Liu Hongji smiled.

Li Chao had already changed his face, "Twist it out quickly and throw it away!"
Chapter completed!