The assembled formation easily blocked the metal zombies that surrounded the formation, while Blue Feather, W, Ling Fury, and the attackers of the Howling Sky Wolf and the Seven Kills team quickly attacked after the zombies were blocked, rushing into the group of corpses, and cutting their charging formation.

Because he had not participated in the formation drill, Bu Fan stayed in the team and did not move, but waited for the instructions of the greedy wolf captain, but it seemed that the greedy wolf captain did not have any instructions.

Soon, Bu Fan found out that it was not that Captain Greedy Wolf had no instructions, but that he didn't need instructions, because the group of zombies that surrounded him had been solved by Lan Yu and them.

In fact, not only them, but also the other teams that entered the tunnel at this moment, had already cleaned up those zombies at this time, and then continued to move forward quickly.

"The strength of these zombies is much weaker than those zombies scattered between the hills outside, it's just vulnerable!"

After Lan Yu and the others came back, Ling angrily pursed his lips and said disdainfully.

"These should be zombies in a period of strength degradation, they have been underground for a long time, and their bodies are too affected by the leyline aura, after the passage comes out, and then comes into contact with the elemental aura outside, the fusion of the two auras will make their strength degrade, but after this transition period, these zombies are fully adapted to the aura nourishment of the outside world, and their strength will have a rapid ascension period."

Captain Greedy Wolf said in a deep voice at this time, and at the same time stepped forward, took out a dagger, and disemboweled the abdomen of these zombies, and a strange bloody aura immediately spread, and Captain Greedy Wolf was wearing a pair of gel gloves at this time, put his hand in, and then slowly took out a black thing like a stone. It's about the size of a ping-pong ball.

"Look, the metal crystals in these zombies are only so big, about one-third smaller than the metal zombies we hunted in the outside world, but its crystalline degree is better than that, it's a pity. This pure metal crystallization is not very valuable! After Captain Greedy Wolf took out the metal crystal, he didn't pay attention to the dirty blood stains on it, and shook his head.

"Why? These crystalline qualities should be better than those zombies in the outside world! Bu Fan couldn't help but ask suspiciously at this time.

And Lan Yu helped Captain Greedy Wolf to answer at this time: "Because it can't be used!" The purity of these metal crystals is higher than that of those metal zombies in the outside world, but the hardness and melting point are also high, and the base has not yet found a way to use these high-purity metal crystals! In addition, the metal crystals of those metal zombies in the outside world not only have a lower melting point, but also because the zombies are in the process of survival in the outside world. With different levels of elemental absorption, their metal crystals have more elemental properties and can make the most scarce magic weapons at present, so their value is even greater! ”

Bu Fan nodded, indicating that he understood, but then he thought of one more point, that is, Ping'an Village at the exit on the other side of this underground city.

They have survived on this underground city for three hundred years, and I wonder if they have found the use of this metal crystal?

Looks like there should be. Bu Fan remembered the bodies of some of the village warriors he met when he entered this underground city. There seems to be metal utensils.

"Let's go, don't talk about that, let's move on!" Captain Greedy Wolf interrupted Bu Fan's thoughts at this time and said indifferently.

Bu Fan woke up from his contemplation, and at this time, there was only one team left in the clearing. The teams are gone.

"Hmph, seeing that they didn't even dissect the corpses of zombies, obviously this group of guys already knew that the metal crystals of these zombies were useless, what a bunch of bastards!" At this time, W saw the zombies on the side who were hunted by other teams. Sure enough, the bodies were all left there intact.

Seeing this, Bu Fan sighed slightly in his heart, this is the mutual twining between internal forces, even a little insignificant news, it has not been revealed to Lan Yu.

……

As we go deeper into the underground urban tunnel, huge tunnel cracks slowly stretch out, like a labyrinth, and there are more and more zombies encountered here.

However, similar to the zombies encountered before, the strength of these zombies, although it has also improved slightly, but compared with the previous ones, the improvement is not large, and they still didn't have to make any effort to get these zombies.

"Brother Yu, I think if these zombies have this kind of strength, even if it's the street of death, if we are careful, we can break through!" W said confidently at this time.

The fragile performance of these zombies gave W great confidence, and he finally understood why the base dared to let a group of warrior-level warriors be pathfinders, because the strength of these zombies was indeed a little low.

"Well, W is right, if the strength of the zombies is not greatly improved, then I think we can go to our mission command area, where a large number of zombies are afraid that not only will not cause us trouble, but may become our scoring machine!" Ling Nu also said proudly at this time.

Perhaps, the successive successes have made them both full of confidence, even the most cautious people, at this time they have enough confidence.

Lan Yu fell into contemplation at this time, W and Ling Fu's words were not unreasonable, if the strength of these metal zombies stopped there, then the Central Avenue might really become a feng shui treasure.

"Captain, what do you say?" Lan Yu finally asked Captain Greedy Wolf.

Captain Greedy Wolf nodded at this time and said: "Seriously, this part of the underground city, I am also participating for the first time, in the past, at best, it was to explore the underground town, after all, it is rare for a complete city to be buried underground!" But what the two of them said is not unreasonable! In this way, we will start according to the established mission map, but let's not go deeper, explore a little bit, and don't be careless! ”

With the support of Captain Greedy Wolf, Lan Yu immediately had no objections, so a group of people quickly rushed towards the central avenue displayed in the mission area, and the small groups of zombies encountered along the way were easily disposed of by them.

And the large number of zombies were divided and annihilated, and soon, Lan Yu and they came to the front of the underground city, and the traces of the broken road appeared in front of them, and the remnants of the asphalt road could still be seen on it.

Seeing the city standing in this huge underground space in the distance, except for Bu Fan, the faces of everyone else showed shocked expressions at this moment.

They were not shocked by the enormity of the city, but by the intact preservation of the underground city. (To be continued......)