Even if he has a golden finger, Yang Shuang wants to hang more, hoping to carry the musket as soon as possible and spray all strong enemies to death.

Gunpowder seems very simple to a 21st century veteran, even if you can't study it, nitrocellulose and nitroglycerin are definitely not a problem.

But he failed.

Even the simplest black powder, configured more than a dozen times according to the experience of the previous life, has no power at all, and it can't even be ignited!

It made him wonder if the system had changed the world.

In the west mountain at dusk, people who have been busy all day have leaned under the city wall to rest, some chatting about family life, some teasing widows, and some of them gather around and shouting five and six, and put on a posture to compare and gesture.

Great Sui, the people are fierce!

This is all forced by the northern barbarians, and centuries of darkness!

"Step on the soles of your feet!"

"Rub! Grab his crotch! ”

"Damn, you kid can't fight? Pick your eyes and bite your ears! ”

"Day! Look at his ass pouting, you run a yarn, the fart is just stinky, and it can't kill you! Poke ah! Put your hands together, stretch out your index finger and middle finger, aim at the chrysanthemum, and kill for a thousand years! ”

"Alas! I don't know how you survived as horse thieves before! How stupid! ”

A group of people who competed, drenched in cold sweat, looked at the boss who shook his head and sighed, and walked farther and farther, suddenly felt that he seemed to be more suitable to be a horse thief, despicable, shameless, indecent, and had no character!

In the middle of the cooking smoke owl, many adobe house foundations have been built outside the Yumen Pass, and I believe that soon, everyone will be able to get rid of the days when they are facing the sky with their backs to the earth.

With nothing to do, Yang Shuang entered the gray space.

Last night's night attack, once again captured thirty soldiers, and now the storage capacity has reached forty-five, although it is not yet possible to build a bunker, but the exchange engineering equipment factory is enough.

[Ding, consume 10 soldier souls, and the construction of the engineering equipment factory is successful. 】

[Ding, Level 1 Town Center Activation: Bed Crossbow, Light Trebuchet. 】

Bed crossbow: single-bow type, with a range of 150-300 meters, consuming 1 soldier soul, requiring 3 people to operate.

Light trebuchet: towed type, with a range of 200-350 meters, consuming 1 soldier soul, requiring 50 people to operate.

Yang Shuang is very familiar with these two instruments, but the power is a little small.

At the beginning, I was bored in the border defense when the heavy snow closed the mountain, discussed ancient weapons with my comrades, studied the three-bow bed crossbow and the Roman ballista for a whole year, and for this matter, I also ran more than a dozen times to the military museum after retiring from the army.

The three-bow bed crossbow is undoubtedly a bug-like existence in ancient instruments, and even in the 21st century, those experts called beasts cannot imitate it.

The principle Yang Shuang knows that the missing estimate is the material. After coming here, he already understood that although plants and beasts were the same name as in their previous lives, their essence was completely different.

Maybe it's because of his genes, or maybe it's because of the production process, thinking that it takes three years to make a horse lance makes him feel a little embarrassed.

Finding the R&D option of the engineering equipment factory, Yang Shuang began to imitate the three-bow bed crossbow.

The world made of light blue lines can simulate many things, and if it weren't for the rules, it might be possible to make a steam engine.

The three elements of mechanics are force, direction, and point of action.

Pulley block is undoubtedly the most basic knowledge.

[Ding, leapfrog R&D engineering equipment: three-bow bed crossbow and torsion ballista are successful, and you will get 1 skill lottery. 】

Three-bow bed crossbow: 800-1200 meters range, consumes 100 soldiers' souls, and requires 3 people to operate.

Torsion Ballista: The range is 300-500 meters, it consumes 100 souls, and requires 5 people to operate.

"Whew!"

Seeing that it was another soldier soul, Yang Shuang exhaled heavily, this thing is really too scarce!

Last night, I was busy all night, and I only got thirty, and the probability of one in ten is really low.

However, the skill lottery cheered him up again.

"Lottery!"

[Ding, congratulations, you have obtained the top Legion Skill: Ten Thousand Arrows!] 】

10,000 arrows: At least 100 archers and crossbowmen are required to form a legion, consume 10 times the feather arrows, perform a round of shooting, and have a cooldown of 1 day.

"Huh? What the heck? ”

Seeing the introduction of skills, Yang Shuang was stunned, ten times the consumption? A round of shooting?

But now there are thirty-five souls left, and they are still far from forming a legion.

After a moment's struggle, he decided to exchange twenty single-bow bed crossbows and fifteen light trebuchets first.

Yumen Pass is too simple, there is no defensive power at all, except for two hundred sword and shield soldiers, the rest is only coolies.

Although the sword and shield soldiers can be equipped with bows and arrows, they do not have the characteristics of archers, and it is easier to shoot while standing on the city wall.

"Wu Kun, arrange for people to carry the ash and birch trees that were transported from the river to the city wall, and also take out all the cowhides and tendons that were taken from the Turks last night!" Objects in the gray space need to be put into reality, and they need to have raw materials in reality, whether they are formed or not, just like building a city gate, as long as the materials are sufficient.

Conveying the order, Yang Shuang plunged into the gray space again.

The people's soul has been consumed, and the mining amount of the mine soul has also dropped sharply, and judging by its scale, it should only be able to build a war knife.

Thinking of Shi Da's canine tooth battle knife, he felt a little stumbling, and threw the mine soul into the furnace, and soon, it was another Great Xia Dragon Sparrow knife.

Early in the morning of the second day.

After breakfast, the people who were busy preparing were surprised to find that Yumen Pass had become extremely calm overnight.

Two rows of cold flashing crossbow arrows pointed directly at the pass, and there were more than a dozen strange wooden shelves behind them!

"I'm a mother, that ····· Isn't that a crossbow? One arrow can pierce more than a dozen people! ”

"Shhh····· Ergouzi, have you seen it? ”

"I've seen it! I saw it in Handan, and a few Northern Qi were ready to sneak into Chengnei, but they were nailed to death by the moat by the crossbow, some of their heads were stabbed, and some of their chests were pierced, and the hole was as big as a bowl! ”

"So powerful?!" The questioner was surprised, "We finally don't have to worry about the Turks coming to attack the pass in the future!" ”

The increased defense of Yumen Pass undoubtedly brought a lot of security to the common people, and they worked harder to repair the city wall, and even some were curious, and they wanted to take a closer look at these big killing weapons through the guarding sword and shield soldiers.

At this time, Shi Da also began to practice peerless martial arts.

"One-two-three-four, two-two-three-four!"

"That's right! The posture is in place, do it again! ”

"Breast expansion exercise begins, one, two, three, four, ······"

"Kicking ······"

"Stretching ······"

"Good!" Looking at the six little brothers who were excited and studying seriously, Yang Shuang was very relieved.

Shi Da, Wu Kun, Sanwazi, Niu Er, and Zhou Lao Wu are all from civilian backgrounds, and their desire for martial arts cheats can be imagined.

And Aba, even if he is a descendant of a witch, is also greedy in the face of the martial arts practiced by Yang Shuang, a pervert.

They heard from the boss that if they connect this set of martial arts to the extreme, they can have the power of nine bulls and two tigers!

"Report!"

Yang Shuang was just about to ponder the square dance and popularize the peerless martial arts to the Quanyumen Pass, when a sword and shield soldier hurriedly ran into the newly planned martial arts arena, looking at the slippery and rolling eyeballs, it seemed that he was ready to steal two tricks.

"What's going on?"

"Report to Guan Cheng, this evening, the ancient city of Hecang was occupied by the Turks, and ten miles away from Yumen Pass, the Turkic sentinel was found!"