We are engaged in scientific research in the ancient martial arts world

After Li Yu and Li Yu left Yamingxuan, they went straight back to the small courtyard where they lived.

Because the "reduced" type of arrows and crossbows described by Li Yu are still in the design stage, I was just trying to figure it out with He Suyi.

Therefore, after He Suyi clearly expressed his intention to purchase, Li Yu also planned to start preparing "special supply" arrows and bow and crossbow production materials.

"Old Li, these "special supply" arrows and crossbows are just trying to make a fool of themselves! Where can we get a large number of them to deliver to that woman at once?"

"Why are you panicking? Just make a sample first and show it to her tomorrow. The rest will naturally be collected from her as a deposit and then delivered one after another! She is not in a hurry to get these equipment to fight.

The arrowheads are all cast. When the time comes, we will go back to the valley to make a larger mold, and the output will increase immediately.

As for the arrow shafts and wooden crossbow parts, just leave them to the more than 100 craftsmen.

When everyone works together, these things can be produced in just a few days. "

"How do you plan to prepare the ratio of spiritual stone powder? We don't have much inventory of spiritual stones on hand. Excluding those special spiritual stones, the inventory of ordinary spiritual stones is only a few hundred at most. We can't even I don’t even want to use it!”

"For each arrow, the tip of the arrow should be mixed with some, and the rest should not be mixed. Just pick out a dozen spiritual stones of poor quality and help them make a batch. I have no plans to supply it to her for a long time.

The arrows we provide to Ya Mingxuan are not focused on penetrating power. The main method of killing is to rely on the rust on the arrows to cause tetanus to the enemy! "

"I'll go! You are so insidious! In this world, there is no vaccine. If you get tetanus, you are almost certain to die."

"That's right! So we're not actually trying to trick them. Although the penetrating power of the arrows is greatly reduced, the lethality of the arrows is not weak at all. One arrow brings tetanus! Two arrows meet the ancestors!" "

"According to what you say, this deal is profitable!"

"Have you ever seen me make a loss-making business? It must be profitable! Our savings are almost at the bottom, and if we don't think of a way to make some money back, we all have to go drink the northwest wind!"

"Then how are we going to make this sample? There is no furnace in this courtyard."

"I estimate that Ya Mingxuan's eyes are watching every move we make. I will go back to the room later and assemble the materials needed for the arrow.

We made the arrowhead mold before, and I still have one left in my storage bag.

Later we will go to the city to find a blacksmith shop and spend money to rent a furnace. It won't take long to cast, and while I'm casting, you'll be the watchdog. "

"What about the crossbow?"

"Don't worry about that. Before we mass-produced the pulley crossbow, I had several wooden prototypes. I'll just use them to modify them tonight."

"No wonder you dare to promise that the finished product will be ready tomorrow. You have dug the hole long ago and are waiting for that bitch to jump in!"

"Not really. At that time, I just wanted to use wood to restore the entire pulley crossbow. I didn't think so long-term.

It just happens that it can be used now. After I remove the pulley structure and magically modify the structure of the entire crossbow, I can hand it over tomorrow. "

A few hours later, Li Yu and Wang Qingyang found a blacksmith shop on a remote street in the south city.

After the two negotiated the price with the blacksmith in the shop, they began to work together. Li Yu was casting "tetanus" arrows in the shop, while Wang Qingyang was watching outside the door.

Speaking of the production of this tetanus arrowhead, there is a lot to talk about. In this continent lacking chemical solutions, how to quickly produce rust in pig iron is a difficult problem to solve.

Fortunately, in the past year, by chance, Li Yu discovered a plant in the woods near the foundry in Tieshi Town. The juice contained in this plant can accelerate the oxidation of iron products, thus Produce rust.

This was also one of the reasons why the workshop rented by Li Yu and the others was idle for a time. In the mountain forest near this workshop, in addition to trees, there are also large areas of such plants growing.

When Li Yu was purchasing materials in Tieshi Town, he learned from a businessman that the name of this plant was: Iridium. Any place where iridium grass grows is not suitable for building forging workshops and warehouses for storing iron tools.

Not only can the juice of this kind of iridium corrode iron products, but even where it exists, there will be a lot of corrosiveness in the air.

Fortunately, Li Yu and the others did not stay in this workshop for long. Otherwise, if they stayed for a long time, the air there would gradually have a considerable impact on the production of their weapons.

At the beginning, Li Yu was also curious about this native plant, so he kept some for future research. Unexpectedly, it actually came in handy this time.

With the help of this iridium juice, Li Yu spent more than an hour in the blacksmith shop and cast more than ten "tetanus" arrowheads.

This "tetanus" arrowhead developed by Li Yu generally follows the spiral design in appearance, but the spiral pattern on the arrow body is not as dense and sharp as the original version. Rather, it is relatively rough.

The tip of the arrow is mixed with a small amount of spirit stone powder, and the arrow body is smeared with a large amount of iridium juice. It only takes more than ten hours for these arrows to be fully formed.

After making these arrows, the two quickly left here and returned to the rented courtyard.

After returning to the yard, Li Yu locked himself directly in the wing room. Because the arrowhead just cast still needs further polishing, and he will not be stupid enough to perform such finishing work outside.

This day passed so peacefully.

It wasn't until the afternoon of the second day that Li Yu slowly got up. He worked until late at night before resting. Naturally, I have to get a full sleep before I can bear to get up.

Anyway, he has completed the production of samples. No matter when Ya Mingxuan sends someone to ask him, he can get the samples at any time.

After he finished dawdling, he slowly walked out of the wing and came to the yard. At this time, Ming Yi from Yamingxuan was already waiting in the courtyard.

Wang Qingyang was currently greeting this "distinguished guest" from Yamingxuan, although he himself did not like to see this girl. But after all, her master was about to be brutally killed by him and Li Yu, so he patiently greeted this "distinguished guest" with a kind attitude.

Seeing that Mr. Li was finally willing to get up, Ming Yi didn't waste any more nonsense and went straight to the point:

"Master Li, I have made a special trip to invite you to Yamingxuan on the orders of my master. I also ask you to follow me."

Looking at this girl, she looked businesslike, although both Li and Yu were a little unhappy at this time. But he still waved his hand, indicating to the girl to lead the way.

After half a stick of incense, Li Yu and Wang Qingyang came to the back garden of Yamingxuan again. This time, the two did not enter the wing where Miss He was.

Because He Suyi had been waiting in this garden for a long time, and was waiting for them eagerly. When she saw Li Yu strolling into the garden. She immediately snorted in a neither salty nor bland tone:

"Mr. Li, please let me wait. I have been here for almost as long as several cups of tea. You are so late. It seems that Mr. Li is not very interested in our future cooperation. Sincerity."

"Miss He has wronged Li. Li is very sincere in his cooperation with the girl! Li maintained the crossbow overnight and was fully prepared for today."

"Oh? Really? Then it seems that I have mistaken Mr. Li?"

"Oh, we are old acquaintances. Please don't argue with Li about this little thing. Come on, this is a portable crossbow unique to our army. Please take a look at it."

After saying this, Li Yu immediately took out a wooden crossbow and handed it to He Suyi.

Li Yu was so anti-customer and got straight to the point and took out his crossbow. Naturally, He Suyi couldn't make too much fuss about his late arrival.

So, He Suyi immediately took the wooden crossbow from Li Yu and looked at it carefully.

"Master Li, your crossbow is indeed very exquisite. However, I am very curious. With such a small bow, you can shoot arrows that can hurt the Grand Master? Could this be your temporary You made it to deceive me, right?"

"Miss He, you can eat randomly, but you can't talk nonsense. You can tell if it's true or false by trying it. Why does Mr. Li need to use falsehoods to deceive you, girl?"

"Okay, since you are so confident in this weapon of yours, then please demonstrate it to me in person. It will also open my girl's eyes!"

"This is absolutely no problem! However, before I demonstrate, please let me introduce to you the arrows I have specially prepared for you."

After that, Li Yu took out a few arrows from the storage bag and delivered them to He Suyi.

After He Suyi took the arrow, he glanced at it twice, then frowned and said:

"How come your arrows are different from the ones I got before? And the arrows are so black that they look like they are rusty. Is there anything special about them?"

"This is natural! There is a lot going on on this arrow! This is not an ordinary rust stain! This is a venom I have secretly prepared! If this venom enters the body, you will definitely die!

The most special thing is that this venom is not painted on. But it is generated by itself on this arrow! Even if you recycle it, there is no need to worry that the venom will run out! "

"Is there such a thing? I have never heard of it. There are arrows in the world that can produce venom on their own! Mr. Li, I don't really believe what you say!"

"Hey, don't worry, girl! Let Li introduce it to you properly. After I finish the introduction, you will understand why this arrow can produce venom on its own."

"Okay, let me tell you what's so mysterious about Mr. Li's arrowhead, that it can produce venom on its own."

"The tip of this arrow is no different from the arrows you obtained before. It has armor that can penetrate the aura of the Grand Master. And the dark thing on this arrow is the juice of a plant.

Use this juice to apply it on my arrows made of special materials. The arrows will have a special reaction with this juice. This produces a highly toxic poison on the arrow.

The name of this poison is: "tetanus". Once it is contracted in a wound, it will be impossible for gods to save it. "

"I see, it turns out that the material of the arrow itself reacted with the herbs applied on it, which produced the poison. Mr. Li, your technique is very subtle."

"That's natural. I improved this kind of arrow only after careful consideration. This arrow is far more suitable for you than the original one.

I guess the ultimate use of the arrows you purchased from me is for assassination, right? "

"Young Master is smart. This girl purchased these arrows, naturally they will be used to develop and expand our Yamingxuan."

"Then this arrow is just right for you. Although this arrow cannot kill the poisoned person immediately, this poison is the most incurable poison in the world.

As long as two arrows hit any part of the target's body, even a living god descending from the upper world will be absolutely helpless. "

"Oh? What do you mean, Master? Why do you say this arrow is suitable for us."

"I think that in your daily missions, you often encounter some targets that are extremely difficult to approach, right?

With the crossbow I provided and the "tetanus" arrows, you no longer need to worry about approaching the target.

The range of this crossbow is about fifteen steps, and it is matched with this special arrow. You can easily eliminate the target without revealing any killing intent.

This arrow does not need to hit the target's vital position at all. As long as you confirm that the target's body is injured by the arrow, you can evacuate directly. "

"Since the young master said that this crossbow and arrows are so powerful and invincible, I would like to ask the young master to demonstrate it to this girl in person. Before I have seen the power of this magical weapon, this girl will not easily listen to the young master. Bragging."

"This is natural. Li will naturally demonstrate it for the girl. But can the girl agree to Li's small request?"

"What's the request? Tell me?"

"Li wants the girl to find a great master who is insignificant to Ya Mingxuan, and then accompany Li to put on a good show."

"Oh? Mr. Li, do you want to use a living person to sacrifice arrows?"

"I want to test the power of this magical weapon. Is there any more direct method than killing people? I want you to open your eyes today and see how I use this magical weapon to assassinate. of."

"So, Mr. Li, are you going to personally teach us by words and deeds? I don't know, Mr. Li is actually an expert in assassination."

"Young lady, you are so complimentary. Mr. Li is just daring to do whatever he wants and is not worth mentioning."

"In that case, Mr. Li, please help me kill someone. Ya Mingxuan has many rewards, and I will order someone to get one for Mr. Li to see."

After saying that, He Suyi ordered Minghe beside him:

"Go and get a reward, the target is the Grand Master realm, and the person is in this Leisure City. You should also take a good look at it today and see how this master from another country uses these magical weapons to assassinate! "

"Yes, Master." After saying that, Minghe took the order and left.

"Miss He, I will not kill this target with one blow. I will only shoot two arrows at him and then capture him."

"Why is this?"

"If I don't capture him, how can I let the girl observe when he was poisoned and died?"

"I see, that girl will follow Mr. Li today to enjoy this great show."

"Don't worry, girl! Later, you will definitely experience what it means: one arrow will kill tetanus, two arrows will see the ancestors."

"What Mr. Li said is interesting. However, I am very curious. Since you don't plan to kill the target, Mr. Li, how do you plan to capture the target?

With just two arrows, the target would only suffer some superficial injuries. How can you, a small master, capture a great master? "

After hearing what He Suyi said, Li Yu just smiled faintly at her and did not answer her question.

After half a stick of incense, Minghe returned, with a Jianghu reward order in her hand. It marked the target of a great master, and this person was currently hiding in the east city of Leisure City.

In order to facilitate Li Yu's operation, He Suyi also thoughtfully asked Minghe to reveal to Li Yu the exact location where the target was currently hiding.

After getting the target's location, Li Yu took one step forward, using the Qinggong Cloud Chasing Step, and quickly moved towards the target. Wang Qingyang was not to be outdone, and also used the Cloud Chasing Step to quickly keep up.

At this time, He Suyi, as well as Mingyi and Minghe beside her, all showed a little surprise after seeing Li Yu and Wang Qingyang's extremely fast and elegant Qinggong. This was their first time. I saw these two young men taking action.

Ming Yi: "Master, these two people's Qinggong is so powerful."

Ming He: "The Qing Gong they learned is probably an extremely advanced one."

"Let's follow them. These two have quite a lot of background. It's not surprising that they possess some advanced skills."

Immediately, the three women also used Qinggong and quickly chased after Li Yu.

After burning a stick of incense, Li Yu arrived in Dongcheng District. After some searching and Ming He's guidance, he quickly located his target.

When He Suyi and the other three also discovered the target, they immediately slowed down their progress, kept a certain distance from Li Yu, and moved slowly.

Wang Qingyang had already straightened his figure and crouched on a roof. Li Yu, on the other hand, quickly adjusted his position, found a roof in the blind spot of the target's field of vision, carefully got down, and then crawled slowly towards the target.

As he approached, the target gradually came within his shooting range. At this time, Li Yu silently calculated the shooting distance in his heart. When he was about 15 steps away from the target, he decisively took out the crossbow from the storage bag, and then took out two spiral tetanus arrows.

After installing the arrows on the crossbow, Li Yu was not in a hurry to shoot. He also held the second arrow tightly in his hand, preparing to load it as quickly as possible after the first arrow was shot. , forming two consecutive shots.

After everything was ready, he decisively raised the crossbow in his hand and aimed at the target's waist. With two crisp "whoosh, whoosh" sounds, two spiral tetanus arrows rushed out toward the target with lightning speed.

This target is worthy of being a great master. When Li Yu's two arrows were shot out one after another, he immediately felt that there was danger approaching him.

His reaction was extremely fast, and he mobilized the spiritual energy in his body in an instant, and attached a thin layer of spiritual energy armor to the outside of his body.

Seeing the target condensed into this thin aura armor, Li Yu immediately snorted in disappointment. But his cold snort hadn't even come out yet. The great master who was only fifteen steps away from him had been completely hit by the tetanus arrow.

The first arrow accurately penetrated his spiritual energy armor and shot into his waist, while the second arrow was firmly embedded in his lungs.

The reason why Li Yu chose these two parts for shooting was mainly because the lungs are the key organs used for human breathing. Once injured by a rusty arrow, it can easily become infected.

The same is true for the kidneys. As an important organ of the body, the kidneys are also very susceptible to infection with Clostridium tetanus.

In order to increase the fatality rate of the target, the part Li Yu adjusted can be said to be extremely tricky. Although the hands and feet are also susceptible to tetanus infection.

But after all, the hands and feet are not as fragile as the internal organs. How could he, as a thousand-year-old Yinpi, choose the target's hands and feet to shoot? This is totally out of character for him.

The great master who was hit by two arrows was staring in the direction of Li Yu with a shocked face at this time, and a trace of blood overflowed from the corner of his mouth, and his body was stained with blood. Extremely miserable.

After Li Yu confirmed that two key locations on the target's body had been hit by his arrows, he was too lazy to continue lying on the roof. He stopped pretending and had a showdown.

At this time, he stood up slowly, patted the dust on his body with his hands, and looked calmly at the Grand Master not far below, as if looking at a dead person.

The grand master was not too surprised when he saw a person suddenly appear on the roof, but this person did not look like an assassin in his clothes, and judging from his clothes, he looked more like a gentle and elegant man. A handsome young man.

After the Grand Master searched his memory, he was certain that he did not recognize the man. He had no grievances against this person, so why would this person suddenly hurt him with a hidden weapon?

With this doubt, he suppressed the anger in his heart and asked:

"May I ask your surname? It seems that Bi has never met you, right? Why did you use a concealed weapon to hurt me? If you don't give Bi a satisfactory explanation today, then Bi will die even if he has to risk his life. I will definitely kill you here!"

"Just you? Kill me? Are you worthy? Your surname is Bi, right? Then I will call you: Old Biden, how about you?"

"Old Biden, do you know that a reward has been placed on you in the world? I am not the only one who wants to be killed now!"