The first level of the dark system, Shadow Escape, merges the body into the shadows, so as to achieve fast shuttle, a typical escape skill.

Liu Feng looked at the Shadow Arcane Book and pondered secretly.

The second level of arcane in the shadow system, shadowing, distorting light, and achieving the effect of invisibility, but only visual invisibility.

It feels very chicken, just like that day Zhuang Qiushuo, he was discovered by himself all of a sudden, demons have noses, and it is still okay to deal with those demons who have good vision and other organs are not good.

It's not bad to deal with girls, hehe, it's convenient to do some things. Ahem, you can't do that, I'm a companion in the Arcane of Justice.

What made Liu Feng depressed was that no matter how much she flirted with the shadows, she didn't react. Liu Feng didn't have any thoughts at all, and the book only mentioned that the Shadow Department had the most diverse personalities, shy, reckless, wise, and ...... It's stupid, but it doesn't describe how to solve the problem of shyness.

Liu Feng sank into the spiritual universe and was about to study the ups and downs of the dark system.

As soon as I entered, I saw clumps of white foam-like substance, flying in the spiritual universe, like space junk.

It's really a small universe, there is space junk, no, when did it appear.

Liu Feng was stunned for a moment, a little flustered, and then thought of what Wen Lu said that the magic crystal had impurities and must be removed, otherwise it would affect the follow-up study.

Liu Feng's eyes flickered, could it be...

Liu Feng clearly remembered that at that time, a crimson crack opened in the spiritual universe, running through the entire universe, and then sprayed out rain and dew like Dao immortal light, could it be that at that time, these white impurities flew in?

I just don't know how to get rid of this thing, so just ask.

Exiting the spiritual universe, Liu Feng looked at Ai Xinran with a smile, she gave people the feeling of an innocent schoolgirl, she should be a simple girl, ask her, she shouldn't lie to herself.

Ai Xinran looked at Liu Feng like an idiot, a little hairy.

"Can I ask you a question, what if there are white impurities in the spiritual universe?"

"Are you talking about the white impurities produced after cultivating with magic crystals?"

"Yes, yes." Liu Feng's eyes lit up, and it seemed that he had asked the right person.

"As long as you release more arcane, it will be expelled with the release of arcane."

"Well, what if there are a lot of white impurities?"

"Did you use a magic crystal at once?" Ai Xinran, who suddenly realized something, asked.

"yes, what's the problem?"

“……… If you're fine, cast the arcane. Ai Xinran looked at Liu Feng with caring eyes.

"I advise you to treat the magic crystal as a daily commodity, not a disposable product, too many impurities will harm the spiritual universe, affect the release of arcane, reduce the quality of your own magic energy, and it is irreversible, don't repair yourself when the time comes." Ai Xinran closed one eye and kindly reminded Liu Feng.

Qu Qi and Wen Lu never expected that Liu Feng was a traverser, and he had no common sense at all, thinking that the magic crystal was used in one go, so they didn't tell Liu Feng the correct way to use the magic crystal.

The magic crystal is usually used a little bit at a time, so that with the release of the arcane, the white impurities are also eliminated, and there will be no effect on the spiritual universe. But the magic crystal is not available to everyone, and the high price is beyond the reach of most people.

One-time use is usually used when the magic energy is not enough when you are in a desperate situation, after all, it is better to abolish cultivation or qualifications than to die. A low-rank arcanist only needs three of the lowest-grade crystals of impurities to be scrapped, and a median arcanist needs dozens of pieces to scrap.

As a result, sometimes outside of the security realm, wealthy mid-rank arcanists will equip some magic crystals in case they need them.

The reason why some equipment is equipped is because it is expensive, and secondly, it will damage the physique, which is not conducive to subsequent cultivation and further study.

Liu Feng was taken aback, is it so terrifying? Wen Lu didn't tell me to do this, what a pit. Wen Lu must know that Liu Feng will definitely be angry to death if he thinks about it, I spent half of my family property to get you a fast magic crystal, and you still say that I am a pit? It's okay if you don't have common sense yourself.

Liu Feng secretly thought that since they all suggested removing the white impurities first, then this matter would not be wrong, so it seemed that it was better to stop using the magic crystal for the time being.

Wait until the spiritual universe is completely clean before using the next piece. No wonder the magic crystal is so cheap, it turns out that the side effects are so serious.

"You're really rich, you can use that cultivation." Ai Xinran changed her words.

Liu Feng smiled and didn't speak, and secretly said You are really poor, it seems that this Lei Fu is very picky, and he can't afford to buy magic crystals with him, so it's better to raise the level as soon as possible and take the order yourself.

"Hehe, it's just a stupid boy who uses magic crystals to forcibly improve his cultivation." Qin Wu sneered.

Liu Feng just smiled, and he was already greeting Qin Wu's family in his heart.

recruited you to provoke you, first said that Lao Tzu was dragging his feet, and then said that I forcibly improved my cultivation, what does it matter to you.

………

"Arcanists, please prepare for battle, and in five minutes you will be outside the security boundary."

A female voice resembling artificial intelligence comes from the train. Now that arcane is in the modern era, many arcane technologies are being used in equipment, and artificial intelligence is the latest development, but it has not yet been promoted.

After this voice, no one moved, but everyone's hearts were suspended, and no one knew what the entrance to the outside world was like now.

Usually, when you go out of the security realm, the human arcanists go out together, so as to prevent the demons from squatting as soon as they go out, and reduce casualties. And the return is all alone, you can't wait for other arcanists at the entrance of the security realm, right? That's dangerous.

Because of the resources, the city is not connected to each other, and the resources required to connect are innumerable, and the amount of work determines that it cannot be completed. Most of the cities inhabited by humans are places rich in arcane resources, and such places cannot be connected together, they are all scattered in various regions. Therefore, the demons also covet the human city.

So it can be said that every city is a small world.

Of course, cities can also communicate with each other.

Earth arcane and space arcane have risen from the ground, and high-speed rail passages have been built, running through the north and south, bringing great convenience to mankind.

With the support of optical arcane technology, base stations are located all over the world, not only in the places where humans live, but also in some places outside the security realm and even underground of demon tribes.

The establishment of every base station and high-speed rail outside of the security boundary represents a bloody rain of scarlet winds, and most of the base stations are built while dyed with the blood of the Arcanists.

But the establishment of base stations and high-speed railways must be completed, even if there are countless powerful demon tribes there, so that the various cities can communicate with each other, and if one side is in trouble, all sides will support.