Li Wei watched the craftsman just go around the empty field a few times, and then told him to stop.

The obvious problem with this tricycle is that the friction of the shaft is too great, and then the gears are relatively bulky, resulting in a large body weight and slow travel speed.

It's easy to make improvements, make bearings, and then replace gears with chains, and in some places you have to lubricate them, and there is no substitute for them in this era.

"Okay, I know this, what else is there?" Li Wei asked.

"My lord, in addition to this one, there are also repeating firebolts, but we can't make repeating firebolts, we just use flint instead of the previous ignition."

"Oh? Isn't that a flintlock pistol? Take me to see it! ”

Li Wei was pleasantly surprised, who doesn't love guns? It's just that in his previous life, due to legal reasons, he never touched a gun, although he often saw those crackling gunfights in many movies and television, but he could only watch it.

In fact, it is not difficult to build a gun, as long as there is a machine tool and the right steel, even if it is poor, it can be made.

In the previous life, guns were banned only after more than nine years, and before that, there were many small workshops that could make guns, and some of them were not much worse than the official ones in terms of craftsmanship.

In the final analysis, the gun is just a mechanical device, as long as there are drawings, you can find a mechanical processing factory to make it, which is nothing more than the difference between good and bad.

Li Wei felt that the main difficulty in making the kind of gun in later generations was nothing more than special steel, and the most important thing: smokeless gunpowder!

He had seen a video detailing the production of nitrocellulose, that is, nitrocellulose, and the process of making it into smokeless gunpowder for military use, and its history was very bumpy, and there were several major accidents in the middle, and finally succeeded.

It was too easy to touch, and he didn't want to try it and die.

Following Fang Jianbao to another venue, Li Wei saw the suitrigger pistol they made, which was very different from what he imagined, the body of this gun was still the same as the old-fashioned firecracker, the barrel was thick and thick, but there was an opening in the back, and a firing device was designed, but there was no lid for the medicine pool, and the sealing was poor.

"Look, my lord, as long as you pull here, this flint will bounce down and collide with the fire sickle to produce sparks, and it can be ignited and launched."

Fang Jianbao said with the fire gun that he racked his brains to build that could be launched without ignition. In fact, it is not that there were no springs in ancient times, but they were not as advanced as modern spring steel.

Li Wei picked it up and was about to try it, but Xiao Dezi, who was following behind him, hurriedly stopped him.

"My lord, this thing is very dangerous, let's let someone else demonstrate it!"

Li Wei was stunned for a moment, and after thinking about it, he felt that it was also the risk of exploding the ancient firecracker!

Fang Jianbao called a craftsman again, as a small leader, he is also very life-saving, naturally it is impossible for him to go up and take risks by himself, this era is like this, people are divided into three, six, nine and so on.

After the craftsman finished loading the ammunition, he raised the flintlock and pulled the trigger, but the first time it didn't hit, and it took four or five hits in a row to hit.

With a bang, a ball of fire came out of the fire, and the projectile was shot out and nailed to the target more than ten meters in front of it.

The craftsman lowered the fired firebolt, which was still smoking.

Li Wei stepped forward to check it and had a general understanding.

"Okay, I know this too, wait until I go back and think of a way for you."

He also understands the structure of the flintlock pistol, it is very simple, if he wants to build it, he can build it now, but he still has to think about it again, draw a picture or something.

The three of them returned to the hut, and Fang Jianbao asked people to serve tea, which was not a good tea, so they could barely drink it.

The reason why people in this era love to drink tea is not because it is delicious, but because it is too difficult to drink white water directly, and now the wells are dug directly from the ground, which are not too deep, and they are not filtered, and what the taste of water is completely depends on the land, some are bitter, and some are astringent.

"I've seen both of these things, I want to find a way to improve it for you when I go back, Your Majesty, then you don't have to worry, I think Your Majesty is just scaring and scaring you, and won't really kill you."

Li Wei took a sip of tea and said, this day, it's really busy, from Lao Zhu to release him from the palace, first ran outside for a day, and immediately started to work the next day, and then he had to rent a house to settle down, tired!

"Your Excellency, you must save us, we really did our best!"

Li Wei dared to treat Zhu Yuanzhang's words as a fart, Fang Jianbao didn't dare to think so, in the hearts of these little people, the emperor was all golden mouths, and he would kill whoever he said.

"Don't worry, Your Majesty, then I'll go and say, you can do things with peace of mind."

Li Weiwei comforted him and said, "By the way, I still have some things to help me find." ”

"Your Excellency, please command!"

"Well, one is pure copper, which is red or purple copper, and then find some magnets, by the way, and lacquer."

Li Wei wanted these to build generators, although in ancient times would not smelt the pure copper with a copper content of more than 99.9% in later generations, but red copper has long existed, people dislike red copper is soft, not suitable for making utensils, and then add other metals to make various alloys, such as brass, bronze and white copper.

Of course, ancient red copper and modern pure copper are incomparable, but let's barely use it first, and when there is electricity, we can produce pure copper by electrolysis.

As for the magnet, there is a ready-made magnet, although the magnetic field is weaker than the artificially made strong magnet, but it doesn't matter, make it first, and then use electricity to make a strong magnet with electromagnetism.

As for the last raw lacquer, it is a natural insulating paint, which is also a ready-made thing, which has been widely used in this era, but it is used in furniture.

Fang Jianbao thought for a while and said, "Don't worry, my lord, I will help you find these things you want." ”

"Well, that's good."

Li Wei is a major in electrical and mechanical engineering, and when he returned to the Ming Dynasty, he felt that he couldn't do anything without electricity, so building a generator first was the top priority, and the others had to be in the back row!

And there is another very important reason, that is, there are a lot of useful materials stored on his computer, of course, not those study materials, but serious materials.

Only with electricity can the computer be used, and many things will be much more convenient.

While Li Wei was chatting with Fang Jianbao, a craftsman ran in and reported:

"Master Li, there is a Lord Xue looking for you outside the door."

Li Wei was stunned, Lord Xue, who?

He thought about it, let's see it first.

"Let him in."

Not long after the craftsman went down, he brought Xue Xiang in.

Xue Xiang's face was very bad at this time, his note asking for two shipyards was beaten back by Li Wei twice in a row, asking him what budget to make, he felt that this traitor was deliberately looking for ballast because he didn't agree to him to be a waiter in the Ministry of Works!

Li Wei saw that the old man who walked in was a little familiar, and remembered that it was the one who opposed him being a waiter in the morning court the day before yesterday.

"Master Li!"

Xue Xiang's face was not good, and he forcibly endured his displeasure and bowed his hand.