Click on a button on the system, only to see the screen change, just like a mobile phone, a large number of video classifications appear on it. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

I saw that the top one was the video of his battle with the human-faced bird today.

Although he has killed a lot of demonic beasts like human-faced birds, Yi Chen still clicked on them with his mind, and he was ready to analyze and analyze them well, so as not to have such a thing as capsizing in the gutter when he encountered it in the future, after all, the venom of the human-faced bird still made him very jealous.

Moreover, the demon doesn't have any cultivation techniques, and he doesn't need to cultivate, and the requirements for promotion are completely based on flesh and blood, so this kind of battle video is also a way for him to pass the time when he is bored.

After all, the lifespan of a mid-level demon is generally close to a thousand years, and if you can't find something to do, then like many other demons, you will go crazy in boredom and killing, and then directly become a chaotic camp.

Yi Chen also learned from the exploration that the demon was not in the chaos camp from the beginning, which was also different from what he knew in his previous life.

In fact, since coming to the Blood Abyss, many of Yi Chen's concepts have been overturned.

Watching the video quietly, the human-faced bird inside looked very vulnerable under Yi Chen's innate ability, but this creature was a lower demon level after all, in fact, if it didn't have that combat knife and innate ability, even if Yi Chen's body was extremely strong, it would be very troublesome.

After observing the video for a while, Yi Chen studied the attack method of the human-faced bird again, and after trying to take it down without a war knife next time, he turned off the video, and then carefully picked up a wooden box beside him.

Gently opened, a green halo appeared in the cave**, illuminating Yi Chen's somewhat hideous face.

Although this kind of demon core is very unstable, it is still very useful for Yi Chen, and if it is used to devour, it can also increase the strength of the body, although it is not very much.

There is another way, which is to use it as a bomb and throw it quickly when it encounters an enemy, just like a grenade, but it is not very useful for agile monsters.

However, Yi Chen was not very interested in the above two methods, and the magic core had a third use for him, that is, to replenish energy for the system in his body.

Yes, the system also needs energy to drive, whether it is the ability to analyze during the battle or the video playback after the fact, it needs energy, and without energy, the system can't do anything.

In fact, Yi Chen has long understood this, after all, nothing in this world is for nothing, not to mention that this is more in accordance with the law of conservation of energy.

Put the magic core in the palm of your hand, and then gently move your mind to absorb it!

I saw that the green light of the original cave ** disappeared in an instant.

Yi Chen didn't panic, he knew that this was the system that had devoured the demon core, and this lower-level demon core could guarantee the operation of the system for at least three days.

Yi Chen only needs to find another magic core within these three days.

However, just as he was about to shut down the system and go to sleep, he suddenly felt that the system seemed to be different from before.

I saw that the symbols that were originally on the screen slowly began to rotate, and at the same time, bursts of sizzling sounds came from the system, as if something was being loaded.

This situation has never been seen in Yichen, the system has been in his hands for more than a year, and it can be said that the moment he woke up, the system already existed.

And the magic core system like the human-faced bird has also been devoured, I don't know how many, but none of them have shown such changes as now.

Seeing that the light on the system screen was getting stronger and stronger, Yi Chen didn't dare to make any moves, as if he was worried that if he moved, it would affect the system.

Time passed minute by minute, Yi Chen didn't know how long it was, it should have been almost a few hours, just when he was about to get impatient, he saw the light on the system bloom instantly, and Yi Chen's eyes blinked unconsciously by this strong light.

When he opened his eyes, he saw that the system had been changed and had returned to its previous inconspicuous appearance.

However, under Yi Chen's careful search, he finally found that at the bottom of the virtual screen, there was a strange symbol that could be touched.

Cautiously tentatively clicked.

"Huh!"

I saw the screen flash, and a new interface appeared in front of Yi Chen's eyes.

I saw countless symbols flashing on it, and it was not until a few minutes later that it gradually dissipated, and then a virtual tree appeared that indeed occupied the entire interface.

However, even if it was virtual, Yi Chen still felt a trace of pressure coming from the interface.

This also made him start to be more careful, and after some hesitation, he still lightly tapped his consciousness on the tree, but the next moment, his consciousness was suddenly sucked into the tree.

For an hour, two hours, three hours, Yi Chen sat motionless on the stone bed, as if he was dead.

But after waiting another five hours, Yi Chen's blood-red eyes finally opened.

After sobering up, the emotions on his hideous face kept changing, one moment excited, one moment bitter, and another moment a little annoyed.

Speaking of which, the system has indeed undergone great changes this time, and it can also be called an upgrade.

And after the system upgrade, there is also an additional function, this function really made him extremely excited when Yi Chen first saw it, because the appearance of this function proved that his system is indeed a veritable golden finger.

But just as he looked down with excitement, he was hit hard.

With a sigh, Yi Chen recovered his mood for a moment, and then began to think.

The new functions of the system are actually a bit like a game, and the big tree that occupies the interface can also be called a skill tree, and when Yi Chen's consciousness entered it, he saw countless glowing skills floating in the big tree, just like a glowing star in the universe.

If these skills meet the requirements, they can all be used by Yi Chen, just like the innate abilities given by the abyss when he advances.

When he saw this, Yi Chen could be said to be extremely excited, because there was no lack of existence in the skills that destroyed the world and brought the dead back to life.

But when he was about to activate these skills, he found that these skills were wrapped in a thick layer of fog, and he couldn't break through them at all.

Even if he was the closest ability, although the fog on it looked very thin, but after trying it a few times, Yi Chen still couldn't break through, which also made him very frustrated, and he actually had a feeling of entering the treasure mountain and returning empty-handed.