What is the situation? How can a bullet freeze in the air for no reason? This is completely contrary to the laws of nature! But all this is clearly presented in front of Ellis! There is no fluctuation of vindictive spirit, no fluctuation of magic! The bullet is so strangely fixed in the air!

"This is?" Ellis looked at Yun Feng with a questioning expression, hoping that Yun Feng could explain, could this be the real intermediate gun fighting technique? Could it be true that what Yun Feng said is true? Bullet drift is just the most basic technique in gun fighting!?

For Ellis's question, Yun Feng had nothing to hide, and said directly: "This is a U-shaped ballistic, the bullet will turn back in reverse after flying a certain distance, and the moment the bullet stopped in the air just now is the effect that the bullet is counteracting the force of the forward flight and preparing to turn back." Pen & Fun & Pavilion www.biquge.info"

It seems that the natives of this world probably don't know what the English alphabet is, so Yun Feng directly used a trace of fire magic to draw a u symbol in the air and explain it.

There is also a detailed explanation of why Yun Feng was able to stop his bullet after Ellis fired, which can only be achieved by using the gun chasing technique that can increase the speed of bullet movement, and it is very simple to accelerate the bullet to ten times with Yun Feng's strength.

Of course, only Yun Feng can achieve such an effect, and it is already very good for some beginners to be able to speed up by one-tenth.

Next, Yun Feng demonstrated the S-shaped ballistics that can avoid innocent people and kill targets in the crowd and the L-shaped ballistics that kill targets hidden deep behind cover, and carefully explained the use of these techniques, as for how much they can understand, it depends on themselves.

After Yun Feng had fully explained these techniques, he withdrew from the protective barrier of the classroom and left alone, leaving only a group of students and Ellis who had been lost in the complicated gunfighting skills.

Walking out of the classroom, looking at the sky that was not too dark, Yun Feng confirmed the direction and directly sacrificed the flying sword and flew in the direction of the Forging Master Guild, the protective barrier of the academy was useless in Yun Feng's eyes, and it automatically opened a hole for Yun Feng without practicing any movements.

I forgot to ask for the reward, Yun Feng still has a very important thing to do now, but just as Yun Feng was rushing to the Forging Master Guild, a system prompt made Yun Feng's speed slowly slow down.

"Ding! The machinery factory has been preliminarily constructed, do you need to observe the construction results? and give follow-up construction advice?"

It's only been a few days! Yun Feng had to start admiring the speed of the construction of the robot, the legend that the robot can build a B-class star destroyer every day seems to be true!

"Open the stereoscopic view, I'll see what kind of machine factory the robot has built for me!" Yun Feng said excitedly, but soon Yun Feng seemed to think of something, and suddenly disappeared into the air.

In the system space, the huge spaceship still floats in the air like a dome, and in front of Yunfeng is a three-dimensional image of a mountain.

With a wave of Yun Feng's hand, the original mountain suddenly faded down, and a huge tunnel appeared straight down.

Seeing this, Yun Feng waved his hand upwards again, and the tunnel displayed in front of him suddenly began to slide down rapidly, and after a long time, a huge, all-encompassing space appeared in front of Yun Feng!

The lower end of the tunnel is right at the edge of this space, which appears to be an elevator, and this space has countless passages leading to several small spaces that crisscross up and down, and in these small spaces, countless robots are talking about some things on the control wall and materials are mined and transported back to the main space.

These small spaces should be those mineral deposits, and the location that Yun Feng chose was definitely well thought out, not only was the number and variety of mineral deposits around it rich, but there were also several large magic crystal mines!

There are already several production lines in the main space, and a steady stream of robots are jumping from the end of the production line to join the expansion team of the base.

From the time the first production line was built, the materials for making the robot had been put up, and when the last production line was built, a robot that was about to be completed had just arrived at that production line!

It can be said that there is no time wasted on this way! If it weren't for the fact that the main space is not large enough, it is estimated that there are already hundreds of production lines! And some of the newly manufactured robots have begun to join the expansion of the main space.

As soon as the main space is expanded enough to allow a property insurance to be put down, a group of robots will suddenly break away from the team that has expanded the main space and start to make production lines and prepare materials for new robots, such as furnace machine tools.

However, Yun Feng noticed that there was a team of robots who did not seem to be involved in the production of the production line or any other tasks, but focused on expanding and strengthening the space in one direction, and there were no robots to make the production line in the expanded space, as if they were preparing to do other purposes.

Yun Feng asked the system his own question, and the answer given by the system was that the space expanded by these robots was mainly used to place the robots or materials and weapons that would be made in the future.

After all, it's impossible to use all the robots for mining and base expansion, and it won't be long before they can turn the entire Warcraft Forest into a suspended space!

And some materials will not be used to make robots, such as those very cherished materials, so it is better to let those robots waste than to put Yun Feng in the auction house to exchange them for useful things.

Yun Feng took a closer look, and now there are thousands of robots in the base, and it is estimated that it will not be long before there will be tens of thousands! It's only been a few days? Twenty robots have become thousands of robots! The production speed of robots is really not covered!

"Is it possible to assemble the mech control and combat personnel needed for a B-class War Fortress battle group in two years?" Yun Feng estimated and found that he couldn't figure it out...... You can only ask the system.

"Calculating...... To meet this demand, we need to produce 100,000 robots per day! However, it is estimated that the resources around the machine factory cannot meet this requirement, and if mining continues at this rate, all the mineral deposits in this area will be exhausted in one year! Will a new machine factory be opened?"

"I don't care about this, you can look at it, the current mechanical factory should be able to produce mechanical armor, right?

After thinking for a while, Yun Feng saw the spaceship in the sky again, and his eyes lit up and said: "If you have time to spare, recall some robots to join the transformation process of the exploration ship, and let the exploration ship be completed as soon as possible! The resources of space are far more abundant than the resources on the planet!"

"Good master, when the machine factory is on the right track, it will recall the robots for the transformation of the exploration ship depending on the situation!"

Yun Feng, who left the system space, looked at the boundless sky, imagining that the group of warships that covered the sky and the sun was about to appear! A feeling of comfort couldn't help but come to his heart! At that time, no matter what kind of demon army he is, who can cover it with a salvo? (To be continued.) )