Why did Li Guo start to keep to himself during this time? He certainly has his own ideas.

When the Tiger Gun and Tiger Cannon in his mind were developed, Li Guo realized that maybe the time to dominate the world had really come.

The firing range of the Tiger gun reached 250 meters, and the farthest effective range even reached nearly 300 meters, which was four or five times the effective range of the arquebus and flintlock pistol at that time, and the firing range had far surpassed that of other guns.

In the original time and space, some experts once said that the range of bows and arrows could reach 300 meters, talking about longbows or large bows. This is pure! Most also shoot only a few tens of meters. However, the best archers can still shoot more than 100 meters, and only a few, and there are only a few dozen people under Li Guo who can shoot arrows above 150 meters. Therefore, the bow and arrow will slowly retire from the stage of history as a backup weapon.

And the range of the Tiger cannon is also extremely long, at that time, the firing range of most artillery, depending on the size of the caliber can shoot two to four kilometers, Li Guo's original artillery is said to be able to shoot ten kilometers, this is pure nonsense, Li Guo himself knows very well, that is just for the needs of propaganda, his cannon is huge, and can only shoot five to six kilometers, but where the shells are fired, it is difficult to say.

The Tiger Cannon has changed this concept, and the current Tiger Cannon is lighter in weight, has a longer firing range, is more powerful, and has a high degree of accuracy, and can basically completely explode the target within five kilometers. It's all remarkable.

Therefore, Li Guo calmed down and began to equip the troops with these two things.

Li Guo spent a lot of effort and invested 50,000 people to specialize in the manufacture of tiger guns and tiger cannons.

And, because of the invention of rubber. Li Guo built the wheels of the cart, of course. The rubber wheels are solid and fit around the iron rims. This is a bit behind the hollow tires. However, it is a hundred times stronger than the wooden wheels of the time, and it is easier to walk.

The wooden axle that connects the two wheels of the cart was also replaced by Li Guo with a steel one. In this way, the problem arises, the axle and rim are made of iron, which is not wear-resistant and inconvenient to move around, because there are no ball bearings.

It doesn't matter, Li Guo came up with a better solution and made cylindrical bearings. Lee over the inner diameter of the rim. According to the regulations, the same circular groove was made, and the cylindrical round steel of the same size was artificially polished and put into the groove of the rim, and grease was added to insert the axle into it, and the outside was fixed. In this way, bearings that allow carts to move quickly were invented.

Such a cart moves quickly, is more able to carry heavy loads, and holds the heaviest Tiger cannon. Able to move freely under the traction of four horses. It was Li Guo's artillery that moved faster.

The cylindrical bearings were also used by Li Guo on ships, and although the cannons on the ships could also move, they moved very slowly, and could not effectively capture the enemy's ships quickly. And Lee passed under the cannons on the ship. All were equipped with a winch, which could quickly adjust the direction of the cannon's fire, thanks to the cylindrical bearings.

Another invention is even more interesting. That's the explosive bomb!

Explosive bombs were not used by guns, and Li Guo could not think of a way to put gunpowder in the bullets and shells of the time. Blasting shells are for trebuchets.

The range of trebuchets is very close. Throwing 20 pounds of stones, the effective range is 600 meters.

Same as the cannons of the time. The stones thrown by trebuchets were all solid, that is, the shells of trebuchets and cannons at that time were killed by huge warheads.

But Li Guo's trebuchet is different, no longer throwing stones, but throwing explosive bombs!

Because the foundry industry was a very mature technology at that time, Li Guo ordered people to cast hollow iron balls, and there was a small hole in the iron balls, and a lead wire was placed, and the lead wire was connected to the inside of the iron ball, which was a large amount of gunpowder and iron nails. When fired, the gunpowder instantly exploded in the sealed iron ball, blowing up the iron sheet of the cast iron ball to pieces, and the fragments of the iron sheet and the iron nails in the gunpowder were killing weapons.

Li Guo believed that the blasting bomb would be a nightmare for the enemy.

In addition to this, the invention of the match changed the history of ignition.

The invention of matches has to mention phosphorus, and the discovery of phosphorus is the most interesting and quite accidental.

For the element of phosphorus, Li Guo has the impression that there are sometimes phosphorus fires in the cemetery. When the carcasses of humans and animals decay, phosphorus is decomposed and burns automatically. The white flame with blue flame that you see in the field at night is phosphorus fire. Commonly known as ghost fire.

Therefore, Li Guo believes that there must be phosphorus in the human body, and there is a lot of phosphorus. Li Guo knew that matches contained phosphorus, and he also wanted to invent matches, so he said something to Song Yingxing.

"Ying Xing, although our Tiger Gun has been developed, the number is still not enough, and the relative number of flintlock guns is not much, more are arquebuses, but the arquebus ignition of the arquebus is too troublesome, and we have to come up with a better ignition method." Li Guo said.

"Master Tiger, in fact, now that I have started to use the fire candle, it is not very troublesome." Song Yingxing replied.

"Fire candles? What's that? Li Guo didn't know.

Song Yingxing's corrupt Confucianism that quoted scriptures sprouted again. Tao Zongyi, a scholar in the early Ming Dynasty, said in the "Hair Candle" in the "Dropout Record": "The Hangzhou people cut pine wood into small pieces, which are as thin as paper, and the top of the molten sulfur coated wood chips is divided, and the name is called the top of the piece. I've now started producing candles. ”

Song Yingxing looked complacent.

"Very good, Ying Xing, it's really good that you apply good things to our Tiger Army like this." Li Guo complimented.

Song Yingxing was very satisfied.

"It's just that I know about the candle, but it's still not convenient enough, I want you to send someone to study it, and you can find a way to add phosphorus to the candle." Li Guo instructed.

"Phosphorus? What is it? Where's that? "Song Yingxing really doesn't know about this thing.

"Phosphorus, that is, the ghost fire in the cemetery, this thing and sulfur are put together, and it is very easy to light the fire. Where there is, in fact, we have it in our body, just like we have it in our hair, and the ghost fire in the cemetery is the condition of hair decomposition. "Li Guo is not omnipotent, and can only be explained in layman's terms.

Song Yingxing nodded, he didn't do it, after all, it involved ghost fire, which was still very unlucky in the minds of people at that time, and Song Yingxing was busy building ships at that time, so he didn't have the effort. However, Song Yingxing conveyed Li Guo's thoughts and promised that he could find phosphorus like ghost fire and reward him with fifty taels of silver.

As a result, a research team under Song Yingxing began to study phosphorus without sleep and food. These people are now bald, and they shave their hair for experimentation, but nothing has been studied. Even a few condemned prisoners who were beheaded were transferred to study phosphorus over and over again, but they didn't get it out. Of course, most of this research team is Western, and they don't care about the dead.

In the end, I had no choice but to study people's and urine, so the house was full of commotion and stench.

As the saying goes, hard work pays off, and in the process of evaporating human urine from strong heat, a substance like white ash is unexpectedly obtained, which sparkles in the dark cabin.

Li Guo got the news and rushed over, but found that two people had fainted, not because of the smell of urine, but because the white wax-like phosphorus was strongly toxic.

Fortunately, inadvertently, someone put the glass bottle with white phosphorus outside, and under the sunlight, the white phosphorus turned into red phosphorus, and the toxicity was gone.

So the standard sticks were stained with red objects and packed into small boxes on both sides that were also coated with red phosphorus and sulfur. When the red head of the stick starts to rub against the sides of the locket, the fire is generated.

Li Guo named this thing a match!

However, the period of collecting a large amount of human urine also began. The people wondered, what is this for! (To be continued......)