Jiang Xingchen hurried to the research institute, Xian Ning had been using the demon beast bone configuration alloy to make a new weapon for some days, and he couldn't be wrong by calling himself over so late, he couldn't be wrong with the power, he couldn't wait to see the effect.

Jiang Xingchen did not enter the research institute, Xian Ning was already waiting at the door of the research institute, holding a small repeater in his hand.

At first glance, this repeater looks like a normal one, but if you look closely, you can see that the body of the crossbow is not pure black, but a little gray, and it has a faint sheen.

"Is this what was made with the addition of the Poison Dragon Turtle Bone?" Jiang Xingchen asked as he walked quickly to Xian Ning.

"Yes!" Xian Ning nodded and said, "It's the bone spurs of the Poison Dragon Turtle! This thing is very strange, both hardness and flexibility are amazing, even stronger than the alloy steel we make." But the temperature at which it was smelted was not high, and the bones softened at 800 degrees!"

"What about the effect of adding alloy?" Jiang Xingchen asked, this is the most important thing.

"You try it!" Xian Ning smiled, handed the repeater in his hand to Jiang Xingchen, and then pointed to a large stone in the distance.

Jiang Xingchen's eyes lit up after taking it, this repeater actually used a double bowstring, and the crossbow arm was also thickened, and the power was not small without thinking about it.

Holding the crossbow and gesturing, Jiang Xingchen pressed the trigger, and with a bang, he felt that his arm was numb, and a piece of debris flew up from the rock eighty meters away, which could be seen very clearly in the bright moonlight.

"Go over and take a look!" Jiang Xingchen was the first to run over, and saw that the part of the rock that was shot was concave in a large area, and the edges were shocked, and he reached out and touched the stone chips and fell with a bang. He couldn't help but secretly speak: "It's so powerful!"

The rocks are not green bricks, they are much harder. In the past, the repeater could shoot steel balls into a human skull within 100 meters, but it was impossible to beat such a hard rock like this.

"Stars. The effective range of this repeater is more than 150 meters!I've done experiments, and if I use a larger steel ball, the effect will be better, and the lethality will be much stronger than the previous one!" Xian Ning explained.

"Hmm!" Jiang Xingchen responded, looking at the crossbow and narrowing his eyes: "What is the skeleton of a demon beast, is it also a metal......

He had used the Substance Detection Array to check, and it was very different from the composition of human bones, although there was also calcium, but the content was very small, and the rest were completely new materials. Even there is a big difference between different levels of demon beasts!

"Could it be caused by the Yuan Qi! But human warriors also cultivate the Yuan Qi. Why hasn't there been any change?" Jiang Xingchen faintly felt that it was related to the vitality, but he was still puzzled.

"What exactly is Yuan Qi is now certain is a substance because it plays a role in chemical reactions. Then why is it absorbed by all things in heaven and earth, is it a special energy, and what role will it play in the development of science and technology in the future......" Unconsciously, the question that bothered him the most came up again.

"Xingchen, Xingchen, what's wrong with you?" Xian Ning's voice came into his ears. Jiang Xingchen woke up in shock, shook his head and said, "It's okay, think about the matter of vitality!

"Energetic...... Indeed, we use it every day. But there's a lot of things I can't figure out!" Xian Ning nodded.

Jiang Xingchen waved his hand and said, "Okay, keep this for later research! These days, we will step up the production of new repeaters...... Also, work on another melee weapon!"

"What melee weapon?" Xian Ning asked.

"Let's go!" Jiang Xingchen walked quickly into the research institute. Pen and paper.

"What kind of weapon is this?, why is there still a spike behind the knife?" Xian Ning looked at what Jiang Xingchen had drawn, and asked a little strangely.

"Behind is the three-edged thorn!" Jiang Xingchen explained. last life in his country. Almost all of this thing has been passed down as an artifact by the folk, and it kills people and bleeds. Tying it is a death, how can there be no reason not to use it. In fact, the defect of the three-edged thorn in hand-to-hand combat is also obvious, that is, it is not conducive to chopping! That's why Jiang Xingchen designed such a weapon, a long knife, the other end of the handle is a three-edged thorn, which can be retracted into the hilt, and the handle can be removed from the knife.

"What is the purpose of the three-edged thorn?" Xian Ning continued to ask.

"The wound formed by this thing piercing the body is very difficult to heal, and it is quite difficult to stop the bleeding. ”

"Would you like to design a batch of these crossbow arrows?"

"Uh!" Jiang Xingchen's movements paused, and he felt his heart twitch a little, it was really ruthless, not to mention the most poisonous woman's heart, usually Xian Ning Wen was quiet, who could see it......

Then Jiang Xingchen asked Xianning about the clock, and Xianning said that it had been proofread almost, so Jiang Xingchen told Xianning about the method of measuring gravitational acceleration.

It was already midnight when he returned to the Lord's Mansion from the research institute, Jiang Xingchen didn't have any intention of sleeping, took out a wad of paper, sat down at the table and began to write and draw.

Although now that he has a more powerful repeater, Tang Chuxue's strength has also increased greatly, but it is still far from enough to enter the vast depths to develop magnetite. And when he drew that combination weapon just now, Jiang Xingchen finally had an inspiration, and if this thing is designed, he will be much more sure!

"Brother, aren't you sleeping yet?" Mei'er walked out and sat down beside Jiang Xingchen.

"I suddenly thought of it, I have to get it out quickly, I don't know what to do tomorrow, and I won't have time to get it if it's delayed!" Jiang Xingchen said with a smile.

"Oh!" Mei'er didn't persuade, just sat next to her and watched Jiang Xingchen bow his head and write, gradually becoming obsessed......

At the same time, in the courtyard next to the Lord's Mansion, Zhao Danqing sat under the tree and knocked on Erlang's leg and smiled, with a satisfied expression.

The old man didn't say a word, his face was as black as the bottom of a pot, and he was obviously angry.

In the snatching of corn just now, he finally failed to succeed. It is said that his ninth-level cultivation of vitality is easy to snatch corn from Zhao Danqing's hands, but he didn't expect that Zhao Danqing's goods are so disgusting, and even the saliva and sticky phlegm are all spit on the corn, and this Nima is still a fart.

"Get up, Zhao boy, why the hell do you get up for me and get out, this is my home, you will come to me in the future!"

"Old man, don't be angry! I came up with a good idea!" Zhao Danqing was not angry, and said with a smile.

"Good idea for, I'm too lazy to pay attention to a disgusting person like you, hurry up and get me out!" The old man didn't listen at all, and dragged him out.

"Isn't it just corn, old man, why don't you give it to the two of us, isn't it just to divide us, you are now fooled by him!" Zhao Danqing said.

"Don't come to this set, now I know that the little soul is fading and dividing us, why don't you think about sharing half of me when you eat corn, and spit on me, you did it...... I'll tell your daughter-in-law about this when I go back, and make her disgusted and disgusting!" the old man said angrily.

"Old man, this is boring......! I really have a great idea!" (To be continued......)

PS: There is a lot of work in the morning, this chapter can only be 2,000 words, forgive me, brothers, try to make up for it in the afternoon!