Ten kilometers south of Xiyu County, there is a small village called Gangyan Village.

This village is the closest to the border between Central Province and Jinglang Province, and four kilometers to the southeast of the village is the South China Sea of ​​Huanyu Territory.

At this time, Huang Yu brought Yanyun Eighteen Riders, Octopus Sword Kumo, Emile, the Son of Elements, Yuri the Teleporter, Lai Wei, the Tower Master of the Mysterious School of the Crown of Mysteries, and two faceless The Dark Elf, who had lost his identity, and Greck, who temporarily served as the deputy head of the Black Rage Berserker Legion, stood in front of a hole three meters wide and five meters high.

Two hundred meters away from Ya Cave is the surging South China Sea. If there is a tide of beasts, this Ya Cave might be flooded with seawater.

"Greek, bring the tinder with you."

"If the place is right, the Underdark will become the first battlefield of the Black Rage Berserker Legion."

Greck is a hero with fairly good talent among the Black Rage Berserkers, and he is also the only Black Rage Berserker who has been promoted to Tier 3.

Currently, the Black Rage Berserker camp has been upgraded to Tier 4 and is being upgraded to Tier 5.

A total of 2,000 Black Rage Berserkers, plus 3,000 Black Mountain Iron Guards, formed the Thirteenth Legion of the Universe.

After learning of the existence of the Underdark Region, Huang Yu planned to send the Black Fury Berserker Legion to occupy a territory first.

Due to the particularity of the geographical environment, the Underdark region contains extremely rich mineral resources, many of which are unique resources that only appear in the Underdark region.

If it can gain a foothold in the Underdark, the Universal Territory also has the opportunity to obtain those resources.

It's just that the characteristics of the Black Rage Berserker's unit don't completely match the environment of the Underdark.

Huang Yu still needs to prepare for a battle with the Alliance of Gods. Whether it is the Kate Warrior Legion or the Raven Guard Legion, they all need to participate in that battle.

Therefore, we can only temporarily pull the Black Fury Warrior Legion over to open up the Underdark.

After obtaining a new extraordinary unit in the future, Huang Yu will naturally change his station.

"My lord, please rest assured, Greg will never let you down."

Greg held the tinder in his hand, and replied forcefully to Huang Yu.

After learning about the situation in the Underdark, Grek, who was temporarily serving as the legion commander, was full of pressure.

After all, the Black Fury Berserker Legion has only been established for less than two weeks, and its average level has just reached the second level. Among them, there are only more than 30 hero units, and there is no king-level unit.

Compared with other legions, there is still a certain gap.

After all, even the Twelfth Army, which was born in the same period as the Friends of the Cavalry, has fought several battles and wiped out all the alien races within a radius of fifty miles of Yangwei City. The overall strength has already opened up the black fury warriors.

Now it is hard to get a war zone, no matter how difficult it is, the Black Rage Berserker Legion must also take it down.

So before officially going, he needs to give himself some confidence, and also needs to give Huang Yu some confidence.

"Well, I believe you!" Huang Yu nodded, and then continued, "Let's go, let's see what the Underdark is like."

"yes!"

Yan Yi and the eight Yanyun Eighteen Cavalry stepped forward and stepped into the cave.

Huang Yu, Greck, Yuri, Laiwei, Emile, and the two faceless men were in the middle, and they stepped into the cave after them.

Yan Er, Wu Mo and the remaining seven Yanyun Eighteen Cavalry were the rear of the crowd.

Because Huang Yu's understanding of the Underdark is very limited, and the only passage leading to the Underdark is relatively narrow, Huang Yu deliberately brought along the teleporter Yuri.

Just in case of accidents, I can teleport away with my subordinates in time to avoid danger.

After all, the stability of this kind of tunnel, which is half formed naturally and half dug by gray dwarves, is still a question.

And it took the dark elves three days to reach the surface, so they could tell that the Underdark was still a long way from the surface.

In case something like a collapse or an earthquake occurs on the way, Huang Yu and the teleporter Yuri are there, and they can transfer everyone to a safe place in the first place.

As for the two faceless men who occupy the identity of dark elves, their code names are [Jiuyou] and [Jiuyin].

According to the account of the captured dark elves, the strongest force within a 100-kilometer radius of the dark region leading to this passage is the territory of the dark elves to which they belong.

It's a pity that the dark elf territory named Moso City is a matrilineal society, and the status of male elves in Moso City is very low, only higher than that of foreign slaves.

And [Jiuyin]'s identity is a male elf, after he and [Jiuyou] mixed into Mosuo City, Huang Yu had to find a way to help him change his identity.

The main task of this trip to the Underdark Region is to collect intelligence on the Underdark Region and build Black Rock City, and the second is to plant spies among alien races to obtain information.

For this reason, Huang Yu also sealed the giant dragon and dragon beast of Yanyun Eighteen Riders, hoping that Yanyun Eighteen Riders could help the Black Fury Berserker Legion gain a firm foothold in the dark region before the war of the Alliance of Gods started. .

All the way down, the tunnel is very narrow at the beginning, and as it goes deeper and deeper, the tunnel becomes bigger and bigger.

During the period, many huge caves, underground rivers and underground cracks were passed through. The temperature was getting higher and higher, and the air was getting thinner and thinner.

It wasn't until he entered a strange space where spar pillars intertwined, and all the discomfort of going deep underground suddenly dissipated, that Huang Yu knew that he was about to touch the dark area.

Huang Yu patted those spar pillars and found that these spar stones were extremely hard. He patted them casually enough to slap a flat steel block, but he didn't even leave a fingerprint on the spar pillars.

In addition, this crystal pillar also has the function of suppressing energy.

Huang Yu tried his best but did not break off a piece, and finally cut off a piece with a space crack, put it into the anchor space and prepared to take it back for research.

But somehow, the entire dome collapsed suddenly. Fortunately, Yan Er, Wu Mo and others behind were on guard, otherwise, they might have been buried inside.

"Run!"

Huang Yu didn't have time to regret his reckless actions because the collapse of the dome did not end, but continued and spread.

Under the enormous pressure of the unknown, even the rock wall that Emile and he built casually was easily washed away.

It wasn't until everyone ran for an unknown period of time according to the guidance of the Faceless Man that they avoided the continuously falling mud and rocks.

Looking at the passage blocked by mud and rocks, Huang Yu couldn't laugh or cry.

It was not a big deal for Huang Yu and his party to be blocked in the rear. Although the energy weakened by that layer of crystal wall penetrated, Huang Yu could still sense the anchor points all over the territory.

With the ability of him and the teleporter, everyone can still be safely brought back to Huanyu City.

But in this way, the army on the ground will not be able to reach the Underdark through the tunnel in a short time.

They can only wait for the establishment of the new city, and then go to the Underdark through the territory teleportation just like Yangwei City.