The corpse tide is still ten minutes away from arriving at the Nanqi base, although he knows that the zombies in the northern country are very peculiar and their action speed is very slow, but now no one among Lin Feng and these people has really seen the appearance and action speed of these zombies, and only by seeing it with their own eyes can they make the most accurate battle plan.

In order to prevent the base from being directly attacked, Lin Feng still used heavy laser cannons and super heavy laser cannons to distribute in the front row of the base as before, and used a team of dozens of people with shaped nuclear magnetic resonance rocket launchers to harvest in the rear.

However, the shaped energy NMR rocket launcher in the Nanqi base is different from the one used in the Beishan base, and there is an additional energy slot on the barrel of these bazookas, which seems to be placed in crystals, so this shaped energy NMR rocket launcher is an improved product, it can be launched alone, or it can be used as energy to launch more powerful shells.

Lin Feng now instructed Manager Qian to take the laser cannon to the outside of the base to arrange, and then take some people to use the laser tank to line up the gap of the overweight laser cannon, so that the front of the base is completely covered by weapons.

In the arsenal, in addition to large weapons, the only weapons that can be held by people are laser rifles and laser super-heavy snipers, which are still surprisingly large in number, and you can imagine how many personnel were guarding the Nanqi base in the past.

And now that the Nanqi base has turned into a dead city, what happened?

Mr. Qian used the doomsday watch to transmit the dynamics of the zombie group outside the base, and it was shown from the screen that the speed of these zombies was indeed very slow, it looked like the zombies in Plants vs. Zombies were very slow, and these zombies looked different from before, what was the difference Lin Feng didn't remember.

In the northwest corner of the arsenal of the Nanqi base, a secret door was discovered by Lin Feng, the iron door of the same color as the wall was very thick, Lin Feng only knew the secret of this door when he pushed it open, it turned out that this door was lead wrapped in iron sheets, and all the walls and canopy floors of the room behind the secret door were made of lead, and the role of lead was to isolate energy.

That's right, the room behind the secret door is full of crystals, and there are all kinds of crystals in the zombies' brains, the lowest crystals in it are light yellow crystals, the highest ones are red crystals, and there is a blue crystal that Lin Feng has never seen, these crystals are hundreds of thousands, Lin Feng knows that the red crystals are the brain crystals of the sixth-level zombies, so the blue crystals should be only available to the more advanced zombies, I didn't expect the Nanqi base to be able to collect so much vigilance, but it seems that these crystals are not used.

There is also a crystal vault in the arsenal, and the room is closed with lead, which is superfluous, because although the cultivators can absorb the energy of the crystal, they can't feel the existence of the crystal outside, and it is very dangerous to absorb the energy near the weapon, if you are not careful, the energy in the crystal will activate the nearby weapon, and the powerful cultivator will also die here.

Of course, ordinary cultivators couldn't feel the energy of the crystal from the outside world, but Lin Feng was different now, after he learned the Demon Wolf Technique, the passive skill had always allowed Lin Feng to feel the energy fluctuations around him and the energy level, but outside the room made of lead, Lin Feng could only feel the energy of a dozen sixth-level zombies.

A room made of lead can't stop the energy leakage from the crystal library, so what if the room made of lead is destroyed? Will there be a super-energy equivalent to the explosion of an antimatter weapon?

"Could it be that this crystal library is so tightly made to prevent it from being found by someone, and this person should be referring to zombies, right?"

Lin Feng suddenly thought of the secret of this crystal library, if it was to prevent cultivators from stealing crystals, it was really not necessary to do this, the only reason that could explain the crystal library and the weapon library was zombies.

Maybe the crystal energy in the crystal library is too huge, but this energy can be sensed by zombies, low-level zombies will look for high-level zombies, and high-level zombies will look for more advanced zombies, when the zombies reach a certain level, they will mutate to produce mutated high-level zombies, and the mutated zombies will attract low-level zombies to their side and then devour themselves to provide energy.

If this cycle is true, then it makes sense that the Nanqi base has so many super-large weapons and ultimate weapons, but Lin Feng can't figure out why the Nanqi base has such a large crystal library, if these crystals are the result of hunting in the Nanqi base, Lin Feng will definitely not believe it.

Not to mention that the number of low-level zombie crystals in the crystal library is as high as 100,000, and there are thousands of red crystals in the crystal library, which are all produced by sixth-level mutant zombies, and how terrifying the sixth-level mutant zombies are, Lin Feng, a ninth-level peak cultivator, can't easily deal with them, not to mention how terrifying the number of red crystals here is.

In addition, there is also a blue crystal in the crystal, this is a crystal that Lin Feng has never seen, judging from the fluctuation of energy, the energy of the blue crystal is many times higher than that of the red crystal, it should be a high-level zombie above the level of a seventh-level zombie, Lin Feng felt scared just thinking about it.

In addition to these crystals, Lin Feng found something that made him very excited in a locked box next to the wall.

"Black beads"!

Seeing the contents of the box, Lin Feng's heart was indescribably happy, the production of this kind of black beads was very rare, but the number of black beads in this box was very amazing, there were hundreds, but this black bead did not have any energy fluctuations, and it was impossible to tell from the appearance what level of zombie head the black beads were produced from, so at present, it could only be put into the apocalyptic table first, and then taken to the supermarket to test it after repelling the zombie group.

Lin Feng is the only one in the crystal library, Elder Sima and the other subordinates are left outside to guard, the inventory of the crystal library is very amazing, Lin Feng does not plan to announce this matter, because if this place is made public, some scheming people will find a way to steal, if this door is opened, the energy of the crystal will leak out, and the blue crystal will definitely attract more advanced zombies.

The arsenal and crystal library have been checked, and now Lin Feng has to arrange a specific battle plan, although the number of zombies outside is huge, but their speed of action is very slow, with this, Lin Feng is sure that he can repel this wave of corpses, he believes that what the Nanqi base can do, he can also do.

When leaving the crystal library, a wall next to the crystal library attracted Lin Feng's attention, because a lot of ice crystals appeared on that wall, many, many very regular ice crystals. (To be continued.) )