2291, late December.

China, the imperial capital.

This is Lei Yi's second time in the imperial capital. The previous time was to participate in the national competition, so he followed the team from the Martial Arts University of the Demon City.

And this time, he came alone.

"I didn't expect that Yanzhuo Mountain is so special that even the strong men above the Grandmaster could not set foot here!" Lei Yi looked at the location of the Imperial Capital Martial Arts and murmured.

Li Mu did not come with him. As for the reason, it was because Yanzhuo Mountain could not allow strong people above the Grandmaster to enter.

So it's useless when he comes, and he can't get in anyway.

As for why this is the case, it is said that it is because the heaven and earth vital energy in Yanzhu Mountain is filled with violent fire-attribute vital energy everywhere.

Once the master is strong, the fire-attributed vital energy will be invaded into the body of the high-level vital energy. Once the body is filled with uncontrolled vital energy, there may be a risk of explosion in the end.

This is also a strange place in Yanzhuo Mountain. Although they can call the vital energy of heaven and earth, they cannot control the invasion of these vital energy, so it is easy for something to happen in Yanzhuo Mountain.

But people below the sixth level have no such problem.

Yan Yushan’s vitality is like opening his eyes, only interested in the strong masters and is harmless to low-level people.

At most, they just feel a little hotter when they stay in Yanzhuo Mountain. They will be fine as long as they stay soon.

As for Lei Yi, as long as he does not actively absorb vital energy, there will be no problem.

As the escort officer specified by Mr. Gui, he naturally had to go to Yanzhuo Mountain to deliver things.

Because this time, Lei Yi took Li Mu's letter and soon arrived at the imperial capital Wuhan University and found a vice principal.

Shi Donghui, the only female principal among the three vice principals of the imperial capital Wushu University.

"Hey, it's strange. Last time Old Man Lin took five places from our Principal Xu. Why did you send you alone after so long?" Shi Donghui looked at the letter handed over by Lei Yi and said with a strange look on his face.

"The other four places, Principal Lin said that he would use them when someone breaks through next time!" Lei Yi had already prepared a speech, so he did not hide it.

Shi Donghui looked at Lei Yi, then looked at the letter, and finally nodded without any doubt.

"Come with me!" she said, and took Lei Yi to the other world passage of the imperial capital, Wuda.

The imperial capital Wuda was built on the mountain, so the passage was naturally hidden in the mountain.

After passing through layers of levels, Lei Yi came to an underground building that was almost the same as the Martial Arts University in the Magic City.

Afterwards, he passed a huge metal gate, and a space passage suspended in the air appeared in front of him.

"You can go in. When you enter the northern fortress, go find Chen Ye, and he will arrange it for you!" Shi Donghui pointed to the passage floating in the air and reminded him.

Chen Ye!

When Lei Yi heard this name, he said that he was very familiar with him and had had many dealings with him.

"I understand!" He put on his protective suit, nodded, and stepped into the space passage.

After a familiar dizziness, he came to a metal secret room, and behind him was the space passage.

Lei Yi was skillfully taking off his protective suit. When the door of the secret room suddenly opened wide, a team of warriors rushed in.

"Name." The warrior led by the leader walked to Lei Yi and asked coldly.

Because Li Mu had reminded him before, Lei Yi knew that this was the rule here.

The stronghold connected to the imperial capital Wuda is called the "Northern Fortress". Unlike Heifeng Village, it is very large and the number of human warriors is several times that of Heifeng Village.

Because of the large number of people, the place is strictly regulated according to military regulations, just like the mortal army before the battle between strange beasts and the rules are very strict.

"Lei Yi!" Lei Yi answered honestly, without saying a word of nonsense.

"Where do you come from, and what do you do when you come to the Northern Fortress?"

"I am a member of the Martial Arts University of the Magic City. This time I came to the Northern Fortress to enter Yanzhu Mountain!"

...

After some questions and answers, Lei Yi's identity was fine.

However, he is unable to move freely now, so he can only follow a warrior to the waiting hall and wait for some necessary procedures and registration.

I waited for more than an hour before a staff member told Lei Yi that he could move freely.

It can be seen from this that the Northern Fortress needs to go through for every person who comes and goes through the investigation.

Lei Yiru was relieved and hurriedly walked out of this place and then officially set foot in the northern fortress.

Northern Fortress.

It is known as the No. 1 fortress in China. It is the largest stronghold for human warriors in the ancient world of immortal cultivation and the most solid stronghold.

The fortress is huge in scale, not even smaller than Jingui City where Lei Yi settled. It can be a city.

The northern fortress is divided into three areas, distributed in an annular shape, progressing layer by layer, like an egg.

The innermost part of the "egg yolk" is the core building and hub building inside the fortress. For example, the Warriors Association still has distribution here.

In the outer "protein" part, there are large brick and tile houses, and even some "tall buildings" up to five or six floors, which are all industries of the consortium.

As for the outermost "eggshell" part, it is the residential area of ​​some warriors.

In these areas, there are entertainment such as bars and casinos, and even convenience stores, shopping malls and other livelihood facilities, with very complete supporting facilities.

There are black metal fences between the three areas, so the layers are clear.

What Lei Yi is going to is the branch of the Warriors Association inside the Northern Fortress, which is said to be here.

Warriors Association Northern Fortress Branch.

It is a black building with only five floors high. As for why it is black, it is because of a material called "black steel".

This is a metal extracted from stone, with a very hard texture and can even block the attack of the fourth-level and fifth-level beasts.

It is said that after extracting this material, some defensive tools such as shields were refined, so that some warriors in the lower realm could also withstand the attacks of strange beasts in the middle realm.

However, one characteristic of this material is that its density is too high, resulting in a weight far exceeding other armors. If black steel armor is used, the warrior will lose its power.

Later, a huge black steel mine was discovered in the northern fortress. After large-scale mining, this northern fortress was created.

Important buildings in the northern fortress are actually cast with black steel.

Not only the ancient world of immortal cultivation, but even in the whole of China, there is no place stronger than the northern fortress.

And on the fifth floor of the Warriors Association.

In an independent office, Chen Ye's eyelids jumped for no reason.

"What's going on?"

Although Chen Ye does not believe in the so-called fate, there is a saying that the left eye twitches wealth and the right eye twitches disaster.

And the eyelids that were beating just now happened to be the right eye.

"Principal Chen Ye, someone is looking for you!" At this moment, a woman's voice sounded outside the office.

He knew that it was a staff member of the Warriors Association here, and the other party was responsible for some official duties on the fifth floor, and was considered a secretary.

"Who?" Chen Ye asked instinctively.

"Principal Chen, it's me!" At this moment, a voice sounded outside the door.

Chen Ye swore that he would never forget this voice in his life.

"It's that boy!" The scene of his trip to the south soon emerged in his mind, and he suffered two car crashes.

Moreover, when the imperial capital Wuhan University held a national competition, he flipped the car in front of the other side again.

When you encounter Lei Yi yourself, you will be in a mess.

When Chen Ye thought of this, he felt uncomfortable as if he had been stabbed by a needle, and of course he was a little scared.

"Impossible, this is inside the northern fortress, how could I get overturned!"

But soon, he forced himself to calm down and set himself up a flag.

"Let him in!"

The staff outside the door helped Lei Yi open the office door. Lei Yi naturally walked in and met the "old acquaintance" Chen Ye.

"Principal Chen, we're meeting again!" Someone said hello first, with a very sincere smile.

Chen Ye's mouth twitched slightly, but he still pretended to be an elder, nodded and said no.

"You boy, what's wrong with me?"

"Principal Chen, this time I came to the Northern Fortress for the bet between our school Principal Lin and your school Principal Xu. I just want to use one of the five Yanzhuo Mountain quotas!" Lei Yi said the meaning, simple and straightforward.

After hearing this, Chen Ye breathed a sigh of relief.

Although the place in Yanyu Mountain is dangerous, he can't get in, so he doesn't need to accompany Lei Yi to do anything.

"Oh, you want to go to Yanzhuo Mountain, too?" Then he said curiously.

"Also?" This time it was Lei Yi's turn to be surprised.

"Just a few days ago, many students from our hospital also entered Yanzhuo Mountain. I am responsible for sending them in!" Chen Ye smiled, not hiding it, "If you came a few days earlier, you might be able to set off together!"
To be continued...