Cheng Yang wandered around the underground city and encountered some orcs sporadically. I don't know whether they stayed to watch the house or were too timid to rush out and die. Anyway, now they have not escaped the fate of being killed, all died under the attack of Cheng Yang.

It took Cheng Yang two hours to wipe out all the orcs in the underground city.

He was standing on the inner wall of the underground city at the moment, which was like a deep abyss, dark and could not see the end.

Although Cheng Yang has been to the underground city several times, he just wanders around the city every time, and he doesn't pay much attention to the situation outside. Now that he has killed all the orcs in the city, he has the leisure to look around the underground city.

Of course, the most important thing is that Cheng Yang didn't find anything to attract his attention in this underground city. All the buildings here are just ordinary buildings and do not have any attributes given by the rules of heaven and earth.

In addition, Cheng Yang didn't see a very important thing from here. Where did the orcs come from.

According to such a long time in the end of the fumble, Cheng Yang also has a lot of experience. Since these orcs came to the earth from another world, they should not appear groundless. There must be traces.

If Cheng Yang's sense of orientation is not bad, then the underground city should be located in the north of the entrance of the underground world.

In other words, the passageway of the underground world entrance is in the south of the underground city, and the East and west sides of the underground city are solid stone walls.

In the easternmost part, although most of the place is also a stone wall, there is a deep passage to the distance.

Cheng Yang had a premonition that as long as he entered that channel, he could find out the secret of the orcs coming to this world.

Cheng Yang took a deep breath, jumped off the wall and walked with firm steps to the passage.

As Cheng Yang enters the passage, the light suddenly darkens. Before, in the underground city area, because of the fluorescent flicker on the wall of the cave, the whole space is relatively bright. However, there is no such good thing in this passage. The wall of the tunnel is full of dark stones, not to mention the automatic lighting. Even if there is any light, it will be absorbed when it is exposed to it.

Cheng Yang concentrates and observes the surrounding. At the same time, from the storage ring took out a night pearl, immediately lit up the surrounding.

The Pearl of the night was made by Cheng Yang from the abandoned land. It has never been used. Now it has come into use.

After turning a few turns, Cheng Yang almost walked a kilometer or two before he suddenly saw the light of death in front of him.

Cheng Yang's heart is tight, this is not nervous, but because the answer to the doubts in his heart is finally going to be solved.

Cheng Yang couldn't help but walk a few steps. Suddenly, there was a huge cave in front of him.

Compared with the cave where the underground city was located before, this cave is undoubtedly much smaller, but even if it can't be compared with that over there, the cave is hundreds of meters in circumference and has a height of 50 or 60 meters. Before the end of the day, it is also a magical natural landscape.

What's more, there are no less than 30 beads inlaid on the wall around the cave. Their light is even brighter than the night pearl. I don't know what kind of magic gem it is.

At the same time, at the bottom of the cave, there is a curtain of light shining with infinite light, and the beads on the top complement each other.

Cheng Yang was not in the mood to enjoy the wonderful scenery at the moment, because he found that the light curtain turned out to be a portal, just like the gateway to the other world outside Wucheng city.

Cheng Yang's eyebrows suddenly lock, there is such a portal, things can be a little tricky.

Obviously, this portal is supposed to lead to the orc world, but now there are no orcs out there. As for whether it can be transmitted from this side, Cheng Yang has not tried and can not get the answer.

But anyway, this portal is a hidden danger.

Cheng Yang walked around the portal, even took out a huge axe and attacked the light screen for a while, but it didn't have any effect. If you want to destroy this portal, you can't do it with Cheng Yang's current ability.

All of a sudden, Cheng Yang made an action and directly reached for the light curtain.

A dark voice comes into Cheng Yang's mind.

This is a one-way portal. It can only be transmitted from the opposite side, not from this side.

Cheng Yang is entangled in a moment. His feelings are still one-way. He can only attack himself by the orcs. He can't attack the orcs in the past. Is that too bad?

Cheng Yang waited here for a few minutes, but no orcs came out of it. I don't know whether it is because of the restrictions of the rules that more orcs can not be sent to us temporarily, or because the orcs on the opposite side feel that the original orcs here are enough to wreak havoc on the human world and no more support is needed.

For whatever reason, Cheng Yang can't continue to guard here. It's not clear what's going on outside. He's not allowed to wait here for anything big or small in the territory.Cheng Yang finally took a look at the cave. If he could get a lot of explosives to detonate here, he didn't know whether he could destroy the portal.

"Ah Cheng Yang sighs. It's just his wishful thinking. Since the end of the day, human thermal weapons have been used a little less. The biggest limitation is not the others, but explosives. Because the minerals that make explosives are temporarily and directly lost in the last days.

Now Luofeng city has searched several provinces, but there are still several tons of explosives in stock. Although the effect of these tons of explosives used to deal with demonized beasts or orcs is not very great, the effect of destroying buildings is still very obvious, which has been certified by Leshan and absolutely reliable.

Even if this dynamite can blow this cave down, stop the orcs from coming out of here. But how many gates are there in the world? Cheng Yang couldn't imagine. Not to mention the others, Neal alone has three underground cities. I'm afraid there are three such gates.

How many seats can you blow up?

Next, Cheng Yang quickly exits the cave and returns to the ground without stopping.

For this underground world, Cheng Yang has nothing to look forward to. Originally Cheng Yang thought that the underground city was a city that could be occupied. Now it seems that it is just a place to settle down.

The rest of the business is to manage the site in front of us, called mahad, and to prevent orcs from rushing out of the underworld.

Through this situation, we can be sure that the magic tower must be preserved, and even the personnel inside can not be replaced for the time being.

Although it is a waste to use the accelerated cultivation effect of the magic tower on the territory guards, at the moment, Chengyang is the most powerful one in Luofeng city. In order to ensure the strong combat effectiveness of the magic tower, it is most appropriate to have two mages guarding here.

Although Cheng Yang decided to develop the station in front of him, it was obviously not now, because Neill was still an orc kingdom. He could occupy mahad town only by his own strength.

If you only keep the magic tower here for the time being, you won't worry about anything. The tower's defense and durability are there. Even among the orcs, there are only a few who can reduce the tower's durability. If these people dare to rush over, the magic tower can kill them one by one.

But if you want to develop mahad now and send a large number of people here, I'm afraid the orcs will immediately rush to kill all directions, and there is no place for them to vent their evil fire.

The development of mahad is inevitable, but it must be put after the extermination of the orcs of Neal.