In the end, Kado himself did not dare to go to the mine, and at this time Luo Heng had already left more than a hundred kilometers.

One is that after long-term training, he is brave and strategic, of course, there is a god-given armor, and the most important thing is that the battlefield is unilaterally transparent!

Therefore, these dark elves didn't even see Luo Heng's people, and they were killed a lot.

What Luo Heng didn't know was that after leaving, the city here blocked all the checkpoints with stones.

Demon!

This is what Luo Heng called these dark elves, minotaurs, and sheep-headed demons.

"It tasted good. "Luo Heng is in a cave, and the temperature in this area is obviously higher, obviously geothermal.

In Luo Heng's hand was a half-meter-long rat, which was roasted and eaten after being skinned.

"Eleven kilometers!" Luo Heng probed the ground at an extremely narrow angle, and found that the thickness of the entire formation was as high as eleven kilometers.

"Energy, this is what makes me sin. Luo Heng also knows the straight-line distance of eleven kilometers, so if you want to get through, you have to be at least fourteen or fifteen kilometers long.

And the passage can't be small, otherwise what if you get into trouble?

And most importantly, energy!

Nanobots are great for cutting rock formations, but what about energy?

Where is the only source of energy now?

It's not the Magic Crystal Vein, it's the city!

Ready-made things are fast, mainly magic crystal ore is associated ore, screening, grinding, trouble!

If you want to get out, you need nanobots, and nanobots need to consume energy.

And the source of energy .......

Luo Heng continues to investigate, city!

Underground City!

After investigating for several days, Luo Heng gradually figured out some rules.

Where there are many kobolds around the city and many underground creatures, it is relatively far away from the city.

In addition, there must be a heat source close to the city, either hot springs or magma.

There are two cities, both of which are not big, one is dominated by black dwarves, and the other is a city where a demon, minotaur, and sheep-headed demon gather.

There are not many dark elves in these two cities, and the largest number is still kobolds.

This can only be said to be a settlement, Luo Heng carefully detected it, and decided to give up, the two settlements are really not big, the black dwarf settlement, the black dwarf is only more than two hundred people, and the rest are kobolds, and these black dwarves also forged giant crossbows and the like, and they are defenses built with steel, similar to the city wall.

In addition, the space of the entire settlement is very short, and the sheep-headed demon and the minotaur cannot enter, and there are only kobold people here.

The city where the demon is the master is around a piece of lava, and the demon is rolling in the lava or something.

There are more than thirty Minotaurs, more than forty sheep-headed demons, and the rest are kobolds or something.

"Don't startle the snake. Luo Heng decided to give up.

Keep looking, and in addition, continue to probe the thickness of the rock formations.

Energy!

There is an urgent need for energy, as long as there is enough energy, Luo Heng feels that it is not difficult to go out at all, the surface dwarf territory is steep and the drop is huge.

And there are also mines, caves, mountain crevices, underground rivers and the like.

As long as there is enough energy to detect, it may be a distance of a few hundred meters.

But without energy, Luo Heng would not be able to detect with all his strength.

After five days, the Warframe had lost 30% of its energy, and a large settlement had finally been discovered.

Luo Heng uses long-distance and small-angle detection.

One degree angle, one hundred and fifty kilometers, the energy consumed is five kilometers range detection.

"Six kilometers underground. After Luo Heng made several explorations, he finally found a large settlement.

Well!

It's okay to say it's a dungeon.

On the third floor of the basement, six kilometers.

After having the direction, the rest is easy to do, it is nothing more than looking for a way down, Luo Heng is too lazy to find a ready-made road, twenty or thirty meters away, others are not clear, but it is easy for him to find.

Four partition walls were broken one after another, the longest of which was no more than 25 meters, and the shortest was no more than 8 meters away.

One of the advantages of drilling down the tunnel is that you can use nanobots to hit a ramp directly from the bottom up, polish the rock into a spherical shape, and roll it out directly.

Of course, the ones chosen are all relatively remote places.

The benefits are also obvious, Luo Heng looked at the underground city.

How big is a huge underground space?

It is about 2,000 meters long, the widest is more than 1,000 meters, there are no pillars in the middle, the highest place is more than 30 meters, and the lowest place is 5 or 6 meters.

A huge castle, the castle is black metal, the castle has a diameter of three hundred meters, and it appears to be circular.

"Well-defended, with domesticated demon spiders on top, dark elves and shadow leopards in the surrounding passages, I'm coming directly to the core of the city. Luo Heng muttered in his heart.

The battle armor blocked all of Luo Heng's voices, breaths, heat, and so on.

In addition, Luo Heng appeared in the crack of the mountain again, this gap is not big, this is only on the surface, the gap is more than one meter deep, and there is a passage behind it.

The passage was thirty meters long, and then there was another passage that was opened by Luo Heng at a distance of eleven meters.

Observe!

Recording!

"This time I made a fortune, there is a temple, and there are more than two thousand dark elves here, more than four thousand minotaurs, more than three thousand sheep-headed demons, five or six hundred black dwarves, and kobolds and other monsters, and countless others, and there is a ring of walls around the castle, which seems to be made of stone and molten metal.

"These demon spiders are not easy to solve. ”

"The city actually has a plan, and this circle is like a fortress. ”

"What is the defense to defend against?"

"There are eleven black energy figures, it's difficult. ”

After two days of careful observation, Luo Heng found that this was a hard bone, and there were demon spiders everywhere on the top of his head and on the mountain wall.

And the whole city is divided into several layers, each layer is only a specific person can enter, kobolds are only in the outermost outer, dwarves can only enter the inner layer, and the minotaur demon, sheep-headed demon, and black dwarf live separately.

In the middle is the Dark Elves.

But no matter how difficult things are, there is a way to break them.

Disguise!

Infiltrate!

"It seems that we need to prepare well, and prepare a few more routes for retreat, and there must be some means for the retreat routes. Luo Heng looked at the map and decided to disguise and infiltrate.

"It's still not enough energy, otherwise I'll open a passage directly into the treasure house. Luo Heng pondered in his heart.

Luo Heng returned to the middle of the uninhabited area, and then prepared all kinds of things needed, *, *, burn ~ burn ~ bomb, smoke ~ fog ~ bomb, *, temperature ~ pressure ~ bomb.

Magic sub ~ bullet, magic crossbow arrow, magic crossbow.

Most of the materials are consumed, there are nanorobots, and even the most precise parts can be manufactured.

"Fire ~ Arrow ~ Bullet!" Luo Heng looked at the big killing weapon in front of him and was very satisfied.

Then eat and sleep!

After sleeping, Luo Heng began to prepare, a retreat path is not good, there must be a backup, and one is not enough.

For this reason, Luo Heng studied a lot of information.

Time passed quickly in the busy, Luo Heng prepared for two days, and with full spirit, he touched the predetermined place.

Luo Heng detoured and appeared from another place, here was a mine cave, and there were kobolds and dwarves working in the mine.

The black dwarves here are not as strong as the dwarves on the ground, but they are also stronger than Luo Heng.

When Luo Heng came out of the abandoned mine, he swaggered, and his body was covered with thick ore powder.

encountered kobolds on the road, and these kobolds met Luo Heng and quickly got out of the way.

Here, the hierarchy is very strict.

Walking out of the mine, there are dark elves guarding here, and Luo Heng is no different from other black dwarves.

So there was no check, and the few dark elves guarding were far away.

Elves have a habit of cleanliness!

This is a well-known thing, Luo Heng repeated the things that many dwarven miners had done, and entered the outer city smoothly.

The outer city is chaotic, but the houses where the kobold live are one by one, just like a kennel, and Luo Heng can't enter it at all.

Moreover, there is a city wall between the first and second floors, and the whole city is high in the middle, low in the periphery, and the dark elf guards on the high wall in the middle can see any place.

"Whew!" Luo Heng took a breath, and then walked towards the gate of the second floor, where are the dark elf guards to check.