It's actually a rare set of parts.

Cheng Shen became interested.

Being able to burst one of them means that the Library Book Demon can also burst out the other parts of the Abyss Surger.

The probability is low though.

But when this place is completely opened, according to the missionary's intelligence, it will have the permission to open the dungeon at any time. At that time, even if you can't brush it out once or twice, you can always get the rest of the parts together after a long time.

"You wear it first."

Cheng Shen gave the robe to the nezumi mage.

As soon as the gray robe was covered, its figure was suddenly hidden, and it had some mystery, but it would also expose two thin hairy legs from time to time when walking.

Cheng Shen then checked around to make sure that there were no books that could be read, and at the same time, he also found that the huge library did not have a other exit, and the only way forward was the underground entrance that had been opened.

The cave is cold and cold, the passage is sloping downward, allowing five people to walk side by side at the same time, the floor is paved with gray stone bricks, and the walls on both sides are inlaid with pieces of spar-like substance, emitting a faint blue light.

"Let's go down and have a look."

Cheng Shen said to Da Meng.

"Yes, sir!"

Da Meng jumped down without the slightest ambiguity, and advanced more than ten meters under Cheng Shen's gaze, without encountering the mechanism, and the others followed.

Click, click,......

The footsteps of the team echoed in the dark passageway, and it was heard far away, and no one spoke, as if the sound of a heartbeat could be heard.

Cheng Shen took the time to glance at the task list.

Thereinto.

The first mission to destroy all alienated objects has been completed.

It should mean that all the monsters that the Book Demon encountered before, including the puppet in the first level, have signs of being affected by demonic energy. Once you destroy them, you will be able to claim your rewards even if you have completed the regular quest challenge.

The 100% quest reward is a Rare Chest, which can open one of the rare items produced in the Quest.

plus XP,

and some gold coins.

Cheng Shen calculated, and when he got out, he would almost be able to rise to level 17.

Survivors and recruits have an increasing amount of experience to level up, unlike towers, where the amount of experience required for each stage is fixed.

He now needs more than 20,000 experience for each level up.

And it's getting slower.

Tick......

There was a faint sound of dripping water ahead.

Gradually become clear.

The passage soon came to an end.

This is an artificially dug cave, very wide, the size of two or three football fields combined, but above the cave, there are densely hung stalactite pillars, like a stone forest.

Magical energy so dense that it was visible to the naked eye covered the stone pillars, and drops of crystalline blue liquid dripped from the tips of the pillars.

In the process of dripping, most of the liquid will evaporate, and only a small amount will fall to the ground, accumulating into palm-sized blue puddles.

The bottom of the pit flickered.

Cheng Shen suddenly became short of breath after seeing the things inside.

That's a crystallization of energy!

"Here...... Sure enough, it's an energy crystalline vein! ”

He was shocked.

Outside, the only way survivors can earn primary energy crystals is through resource packs that are rewarded by defense. After five waves, some can be spawned in the built grocery store, but the number is extremely limited.

But at this moment, at a glance, there were at least hundreds of energy crystals that he could see!

Such abundant resources made him blush!

"The missionary said that if you open the copy, you can get the ownership of a resource point, could it be that the resource point that pollutes the library is this energy crystalline vein?! It's a lot of money now......"

Cheng Shen quickly calmed down.

This place doesn't belong to me yet, and there are still two of the main quests that have not been completed.

One of them also kills the final boss of the dungeon, the Evil Mage.

Now is not to be taken lightly.

He looked up, and in his vision, the cave was completely filled with dark blue energy, and there was almost no trace of the presence of other elements, but this made him not worry about the elemental confusion.

Pure magic can make this area incredibly stable.

"Magical energy, it should also belong to the category of energy, I don't know if I can manipulate magic energy to cast magic......"

Cheng Shen's thought suddenly came to mind.

He immediately dispersed a wave of spiritual power, reaching the demonic energy in the air, and as soon as he made contact, a strange and sluggish feeling flooded through his mind.

The spiritual power slowly drove a wisp of demonic energy to move.

But his mana was consumed at a rate close to five times that of usual.

Cheng Shen immediately interrupted the attempt.

"It can be sensed, but it's hard to control, and it's nowhere near as easy to control ordinary elements...... Is the level of energy control insufficient? ”

Cheng Shen glanced at the skill bar.

Energy control has been used almost every moment since he learned it, but the progress of proficiency is very slow, it is a talent, and it cannot be improved with skill points, so he can only rely on his own slow use of cultivation.

"If you can control it, it means that the effect of the talent has been played, so there is a high probability that the talent level is not enough."

Cheng Shen couldn't help but be a little curious.

"Is there a hierarchy of energy?"

In his understanding, the intensity of energy is a matter of how much is gathered.

Now it seems that his philosophy is about to be completely overturned.

"It's really not good to have not experienced systematic learning, but it's a pity that Lawrence is also a half-ass...... Alas. ”

Cheng Shen paused for a moment, then switched to the bright red form and walked forward.

Elemental energy could not be felt in the air, and his law system ability was about to be greatly weakened, and at this time, the bright red form came in handy.

As soon as the form was switched, his blood volume suddenly soared to 12,000 points, which was higher than Da Meng's Tandu, so there was naturally no need to continue to hide behind.

Walking to the center of the cave, Cheng Shen saw a bottomless pit with a diameter of one meter, and the pit continued to erupt condensed magic energy, and pieces of energy crystals formed at the edges, and Cheng Shen's eyes glowed.

"That's where the magic energy leaks in."

He judged at a glance.

It is precisely because of the continuous gushing out of this pit that the magic energy in this place will always exist, as long as you find a way to plug this big pit, the impact of the leakage will gradually diminish until it returns to normal.

"Plug it......"

Cheng Shen's thoughts turned.

In fact, the monsters born from the alienation of magic energy are also one of the resources produced in this dungeon.

Not to mention the material.

Experience alone is quite a huge gain.

If this hole is plugged and there is no magic energy to influence it, will other monsters still refresh?

Cheng Shen felt that with the rigorous logic of the system, he would definitely not brush it.

And.

The crystals in the cave are all produced by this mysterious cave.

"If you can't block it, then the intention of the task of solving the root cause may be to make use of it......"

Cheng Shen continued to walk forward.

On the inside of the cave, there is an uneven cave passage, walking out of about 100 meters, a huge space appeared in front of Cheng Shen, and a shocking scene suddenly hit his field of vision, and there was a dragon entrenched in the space!

A lifelike blue dragon with a body length of hundreds of meters and dense steel scales!

The dragon's eyes were open, revealing a pair of clear yellow eyes, its huge mouth was slightly open, its teeth like sharp knives were intertwined, and its snort spewed out a cold breath, freezing the ground in front of it into frost.

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