David tried to let Shadow Assistant enter the cave, but unfortunately, Shadow Assistant had only been a few meters away from the entrance of the cave recently and could not enter the cave.

This was the first time David encountered this situation. He didn't even see this level 4 Zerg and was blocked outside.

For a moment, he didn't think of a solution, so he could only stay underground and wait for the opportunity.

Time passed little by little, and the timeliness of the innate ability of "underground stealth" had long passed, and David was pressed tightly by the soil underground.

Fortunately, the customized exoskeleton armor provided him with enough survival oxygen through the internal circulation system so that he could remain motionless for a long time.

David observed the situation at the entrance of the cave through the shadow servant on the ground, but an hour or two passed, and the unknown level 4 Zerg had never left the cave.

"Hey, there is movement!" In this boring waiting, the shadow servant suddenly saw a figure appearing in the direction of the entrance to the valley.

It was the "Giant Pliers Flameworm" guarding the valley entrance. At this time, the "Giant Pliers Flameworm" was still holding a second-level Zerg in his mouth.

This 'giant flame bug' is obviously afraid of here. It walks very slowly and is very cautious.

Along the way, the mine ants were very numb and seemed not to notice the "giant tongs flame bug" and were only caring about their own work.

The "Giant Pliers Flameworm" came to a location more than 100 meters away from the entrance of the cave. The "Giant Pliers Flameworm" knew very well the spiritual cover here, so the position where it stopped was just outside the attack range of the terrifying spirit.

The "Giant Pin Flame Worm" humbly lowered his head, put the second-level Zerg in his mouth on the ground, then retreated little by little, and then turned around and left the valley many times faster than before.

David immediately understood that this was the "giant tongs flame bug" to deliver food to the fourth-level Zerg in the cave. Although some of the Krypton crystals in the krypton crystal caves are krypton crystals, the Zerg only needs energy to survive.

But most Zergs have an instinctive love for blood and meat, which is engraved in their genes.

It is precisely this gene's love for blood and meat that makes the Zerg extremely wary.

David looked at the trembling second-level Zerg on the ground through the shadow servant. The second-level Zerg was bitten off from all limbs. The force was very clever and did not pierce the skin, which made the second-level Zerg unable to move.

It seemed that this second-level Zerg also understood his fate, and even if his body was in extreme pain, he did not make a scream.

Because you may be able to live longer if you don’t make a sound, once you make a sound, you will remind the fourth-level Zerg at the entrance of the cave to eat.

David's heart moved, and he inspired the "underground sneak" to come under the second-level Zerg, took out a piece of beef from the space bag, and then used the "poison-attached" talent to bless the fourth-level highly poisonous beef.

The beef is very small, and the shadow servant can lift it up. David quickly stuffed the beef in a bottle.

During the entire operation, David himself did not touch the beef, and it was done by Shadowman.

Even though David was wearing custom exoskeleton armor, he did not dare to try the power of the level 4 highly toxic.

It was not until the bottle was sealed that David breathed a sigh of relief.

No matter when it is, being so close to the level 4 highly toxicity, it will make his sense of danger constantly issue an alarm. The danger of this extremely toxicity that can easily deprive him of his life at any time is too great.

Without hesitation, David ascended from underground to under the second-level Zerg, then took down the "Extraordinary Military Sword" and stabbed a wound under the second-level Zerg's body, put the bottle in.

The sudden pain made the second-level Zerg unable to hold back, and it let out a miserable howl.

David's movements were very fast. After doing all this, he immediately returned to the ground, leaving only the shadow servant to observe the situation.

Less than two seconds after the second-level Zerg's howl, a figure appeared in the hole.

David had already retreated further away, and Shadowman saw the full picture of this level 4 Zerg, which was a "phantom butterfly".

‘Phantom Butterfly’, the Zerg among the Level 4 Zergs who are proficient in spiritual psychedelics, has formed two different levels around them.

The outermost layer is influenced by the spirit of the "Phantom Butterfly". When creatures entering this layer are subject to its mental attack. If they cannot resist, they will become a corpse.

The inner layer is composed of a powder on the wings of the spirit and the "Phantom Butterfly". In this layer, the enemy will have hallucinations and be controlled by the "Phantom Butterfly".

Of course, the "Phantom Butterfly" is not the Zerg that creates puppets. Its control is only within its psychedelic range, and it mainly allows enemies to kill each other or even commit suicide.

David recalled the information of the "Phantom Butterfly", and was also secretly shocked. This was the information he saw in the military database after his authority was improved.

The military's record of this place is not a "Phantom Butterfly". However, based on the situation where the third-level Zerg here dare not approach, it is judged that there is a fourth-level Zerg here.

If David had known that the "Phantom Butterfly" was guarding here, he would never have put his first target here.

David's attack methods are divided into several types, one is long-range sniper. This attack method is of no use to level 4 Zergs, and the strongest sniper rifle currently cannot fire level 4 bullets.

The fourth-grade bullet will rub against the barrel before leaving the barrel. With the strength of the fourth-grade bullet, the barrel will be damaged in just one time.

No one has ever used level 4 materials to make sniper rifles, because sniper rifles cannot allow the bullets fired to have the impact that can break the level 4 Zerg, and even if they use level 4 bullets, they cannot do this.

Not to mention David's close-range attack, as long as he approaches the "Phantom Butterfly", he will be subjected to the continuous mental psychic attacks of the "Phantom Butterfly". Even if he approaches from the ground, he will not be able to avoid this attack.

Just as David was thinking, the "Phantom Butterfly" had already entered the cave with the second-level Zerg in his mouth.

David didn't know whether his plan could be implemented. If it couldn't be successful, he could only change to a Krypton crystal mine.

This will waste more time, and he doesn't have much time.

The "Phantom Butterfly" enters the entrance of the cave and comes to the area where it eats normally. It is one of the rare Zergs who likes cleanness. This is probably related to the fact that it must keep the wings refreshing so that the butterfly powder can be emitted more easily.

The "Phantom Butterfly" bit off the neck of the second-level Zerg in one bite, ending the noise that made it dislike. If it weren't for the loud noise of the second-level Zerg, it would have to wait a while before it could eat.

If the second-level Zerg knew about it, it would definitely feel that it was too resentful and it would not want to scream, but someone cut it on it, so of course it would scream.

The "Phantom Butterfly" began to eat. When he bit the bottle, the "Phantom Butterfly" did not notice that the bottle perfectly isolated the poisonous breath. Since the whole process was the hands of the Shadow's hand, it did not leave the breath of mission on the bottle.

A bottle is also a kind of food for the "Phantom Butterfly". It can rarely encounter this kind of light and crisp artificial object.

Besides, the digestive system of level 4 Zergs such as the "Phantom Butterfly" is many times stronger than that of ordinary Zergs. Ordinary Zergs can digest steel, not to mention it.

But when the "Phantom Butterfly" bit the bottle, the beef inside that was highly toxic and corroded by level 4 and almost turned into black water splashed everywhere, and it immediately felt the danger.

The fourth-level poison exploded in the mouth of the "Phantom Butterfly", making the "Phantom Butterfly" feel a numbness in his mouth.

This extremely poison is not enough to make the "Phantom Butterfly" fatal, but it makes the "Phantom Butterfly" angry.

It's a provocation to it, and it needs to find out who is teasing it.

David was hiding underground, and Shadow Master heard a roar in the hole on the ground. He knew that his plan had succeeded.

Then the "Phantom Butterfly" rushed out of the hole, and its wings flapped into the air, flying towards the valley entrance.

David knew that time was not waiting for anyone, so he immediately launched an "underground sneak" and headed towards the cave.

Shadow Master saw the situation in the cave above. The cave was very beautiful because there were too many krypton crystals, which decorated the cave like the spots in the starry sky.

David ascended from the ground to the ground, and he used his own perspective. He began to look for the "perfect krypton crystal".

If the 'perfect grade krypton crystal' is on the surface of the cave wall, it will be very easy to find because the gold color is too conspicuous.

But after a glance in the mine cave, no gold was found.

David frowned. If the 'perfect grade krypton crystal' is hidden, then he will be in trouble.

The "Phantom Butterfly" doesn't know how long it will take to return, so he needs to find out the "Perfect Krypton Crystal" as soon as possible.

David controlled Shadowman to walk through the mine wall, and he came to a cleaned area.

There are a bunch of pits made of top krypton crystals here, which is probably the place where the "Phantom Butterfly" rests.

Thinking about the "Phantom Butterfly" is really luxurious. There are at least thousands of top krypton crystals here. In addition, the environment here can be said that "Phantom Butterfly" even breathes have energy to enter the body.

This kind of cultivation environment can definitely make any Federation more ashamed. No wonder this "phantom butterfly" is so terrifying.

This is true. Only elites trained by the Zerg will be sent to guard this type of Krypton crystal mine, and even the direct descendants of the "Half-body Spider Queen" do not have such a good opportunity.

Every top-level krypton crystal ore that produces "perfect grade krypton crystal" is the most important resource source for the Zerg.

Only the strongest level 4 Zerg will be sent to guard, and it is also the best development conditions for these level 4 Zergs.

Although the Krypton crystal ore here cannot be mined at will, it doesn’t matter if the cultivation consumption of Level 4 Zerg on weekdays. The top Krypton crystal produced by this top Krypton crystal ore is enough to support the daily consumption of Level 4 Zerg.

Because the location here is too important, the level 5 Zerg cannot be directly assigned, and can only be discussed and arranged by many level 5 Zergs.

David was a little surprised at the environment here. He had seen too many Zerg nests, which were dirty, messy and odorous.

But the nest of the "Phantom Butterfly" in front of me is very clean, and there is little stench.

The resting place of "Phantom Butterfly" was cleaned up all around it. A few dozen meters away from the top Krypton crystal pit, David saw the second-level Zerg that was half eaten.

Next to the second-level Zerg, some teeth and claws that emitted a faint blue light and a small amount of green light remained here, and the rest of the bones were cleaned up.

Perhaps it is because of the 'Phantom Butterfly' likes these luminous items that leave these grade materials behind.

This is still on the surface. David stripped off the grade material on the surface, and more grade materials appeared below.

There are probably less than fifty level 3 Zergs that die here. The level 3 materials here are enough to create seven or eight heavy weapons.

Although David had long been no longer concerned with the third-grade materials, he still put away all the third-grade materials.

The shadow servant searched around but found no shadow of the "perfect level krypton crystal mine", which made David anxious.

"Has there been no 'perfect grade krypton crystal mine' produced here yet?" he thought to himself.

If this is the case, he would have been in vain for such a long time.

Finally, David set his sights on the place where the "Phantom Butterfly" rested, where thousands of top krypton crystals were piled together, and only there had not been checked yet.

David opened the top krypton crystals and found that the top krypton crystals here were not as many as the ones seen on the surface. They were all top krypton crystals below.

He kept turning the top krypton crystal to the side and digging down quickly. As he dug about five meters, a golden color appeared in his eyes.

"Have it!"

David accelerated his movements, and at this time he also heard the screams from outside the cave, which were from the warning of the "Phantom Butterfly" to the nearby Zerg.

The "Phantom Butterfly" did not find anything after exploring it. It remembered its own responsibilities and could only come back first.

David couldn't help but feel anxious. He couldn't help but pat his head and attracted Shadow Master. From Shadow Master entered the ground and put the golden light into the space ring.

But at this time, David had no time to leave, because with the ability of the "Phantom Butterfly", as long as he came in, it would be enough to cover the range of hundreds of meters around. With David's speed, he could not leave this area in a short time.

David was ruthless and he called out the "Sound Iron Beetle". Then he activated the "Sound Iron Beetle"'s "Intra-Abdominal Space" talent, and then the "Intra-Abdominal Space" emitted a duct of energy towards David.

David agreed to this energy of attracting, and his figure disappeared instantly.

He opened his eyes and found himself appearing in a pitch-black space. He turned on the lights on the exoskeleton armor and found that the space he was in was the size of a playground.

But there was no time for David to continue checking, because the "Phantom Butterfly" had entered the hole and also discovered the existence of the "Sonic Iron Beetle".

The current "Sound Iron Beetle" is two meters in size. The moment the "Phantom Butterfly" enters the entrance of the cave, David activates the "Sound Iron Beetle"'s "Sound Iron Beetle" talent ability, restoring the original size of the "Sound Iron Beetle".

Immediately, the "Sound Iron Beetle" turned from two meters in size to a huge body of twenty meters, and then the "Sound Iron Beetle" rushed towards the "Phantom Butterfly".
Chapter completed!