Obviously, the entrance to the underground passage to the underground world was dug by the first-level troops of the underground clan, the cavemen and the hell cavemen. (Read the latest chapter for the first time)

Generally speaking, this kind of underground passage entrance is excavated close to the hillside or hill, and it looks like an ordinary cave from the surface, and only when you go inside will you know that it can actually lead to the underground world.

However, experienced heroes can learn from the many clues at the entrance of the cave.

In this world, there are also some mysterious caves that are connected to special mineral deposits, and it may be possible to find special mines in the caves, which may also mistake some hidden sulfur fields for the entrances to underground passages.

Because the entrance of this underground passage through the underground world, the biggest feature is that there will be a strong smell of sulfur, and from the entrance of the underground passage, there will be a stream of wind blowing from the underground world, and this atmosphere will carry a smell of sulfur.

This can be regarded as a unique taste of the underground world, in addition to the sulfur minerals produced by those dungeons in the underground world, which release the smell of sulfur, the underground world also has a special beacon.

This is a special building that can illuminate the underground world, and it seems that sulfur is used as the main fuel, so many places in the underground world emit a strong smell of sulfur.

And the seventh-level class of the underground world, the Red Dragon Black Dragon, is also very fond of sulfur.

Their nests are also filled with brimstone, and occasionally they breathe dragon breath and burn their nests, but they just like to bathe in such flames without hurting a single bit.

Therefore, the main thing that distinguishes between the entrance to an ordinary cave and the underground passage to the underground world is whether there is a strong smell of sulfur coming out of the mouth.

Of course, the entrance to the underground passage dug by the cavemen and the cavemen of hell will naturally be a little different from the natural cave, and most of the mud and sand rocks at the entrance of the cave are in a state of dissolution, which is corroded by the acid spewed out by the cavemen and hell cavemen.

This kind of underground passage entrance through the underground world is generally much larger than the entrance of an ordinary cave, with a width of about 20 steps and a height of more than 10 steps, and it will also feel grandiose.

After all, at a critical time, there can still be a huge seventh-level military class like the Red Dragon and the Black Dragon, and this hole is small, how can it be.

Of course, now Zhu Linglu and Cai Rong'er have no intention of going to the underground world, just like Mogan Kendal's idea, the strength of the two of them is not enough to go to the underground world in the past.

However, seeing this kind of underground passage entrance, Cai Rong'er on Zhuling Road will inevitably be a little curious.

Standing at the entrance of the underground passage, you can feel a cold underground wind blowing out, which naturally carries a strong sulfur smell, and at the same time, there seems to be a taste that makes your heart palpitate.

Zhu Linglu's spiritual power couldn't help but probe inside, and he felt that this underground passage really looked like some kind of insect that came out directly, but even if he explored his spiritual power to the limit, he still couldn't detect anything.

It's just that I feel that this underground passage is going deep underground in a slope state, but it seems to extend down in a spiral, and it should eventually run through an underground hollow valley layer world under the earth's crust.

"Hey, what are you doing! This cave is a bit infiltrating, didn't you say, we don't go to the underworld! ”

Cai Rong'er saw Zhu Linglu's eyes squinting slightly, and she didn't know what she was doing, so she couldn't help but push Zhu Linglu's shoulder and asked.

"Well, I want to be in the situation of the underground passage, but, no, okay, don't go down, according to the game data, there is no black dragon guarding this passage, if you go down in another passage, there may be a black dragon below."

Zhu Linglu thought for a while and said to Cai Rong'er, of course, Cai Rong'er also checked a lot of game information before entering this world, and she still had a team under her, so although she didn't say why, she still asked her team to help her check a lot of information.

At this moment, she blinked and nodded, but quickly said suspiciously, "Is it really possible that there is a black dragon here?" Anyway, I feel like there are very few level 7 troops! Even when I first entered this world, I didn't really see the existence of the Golden Dragon in the Valley of the Golden Dragon Queen, but I heard that there was a Golden Dragon Queen and several green dragons who originally lived in this valley, but were killed by a sneak attack by the Kree! ”

"I don't know, but since Queen Catherine can have angels to help, then it's normal for the Kree people to have the Great Demon Demon, and the Nigons to have the Red Dragon and the Black Dragon! But I don't think it's too much! It's not something we can deal with anyway! Black dragons, in particular, are hardly afraid of magic, and if we encounter them, it will be troublesome! ”

Zhu Linglu thought about it, but guessed that there should be black dragons in the underground world, but these black dragons should not be controlled by the heroes of the underground clan, but it is possible.

After all, this real-world level 7 class is obviously a little different from ordinary troops, and at least it is not easy to control them.

Zhu Linglu suspected that only particularly high-level heroes had the ability to drive the seventh-level troops to fight for them, while ordinary heroes could not command the seventh-level troops at all.

Therefore, in this world, the number of level 7 troops is very rare, because after being recruited, ordinary heroes may not be able to control them.

But now Zhu Linglu didn't dare to touch this kind of seventh-level hero, especially the black dragon of the underground world, such a thing as slaying a dragon was not something that could be pushed down by just relying on military strength.

Think about it, the black dragon can fly, if it feels threatened, it can naturally flap its wings and fly away directly, and the archer crusaders on Zhu Linglu's side can only go.

As for letting the Thunderbird Silver Pegasus chase and kill the black dragon, it may be to send meat to the black dragon.

In this way, even if the black dragon can't defeat Zhu Linglu's huge team, it can harass again and again, and consume Zhu Linglu's ground forces little by little, and in the end, Zhu Linglu may not be able to do anything about it.

In particular, the black dragon was not afraid of any magic at all, and even if Zhu Linglu wanted to release any magic means on it, it would have no effect.

For Zhu Linglu, who now mainly relies on magic, when he encounters a black dragon, he encounters a great crisis.

And in the game, Zhu Linglu often makes a hero who can judge the magic of the end of the world, and with some black dragons, he can basically run rampant on the map at will.

If this is changed to reality, a hero who can doom judgment magic, just sit on the back of the black dragon, release the doomsday judgment magic to the opponent, and then let the black dragon run away with him.

When the magic is over, come back and release one, which can basically be said to be inexplicable.

Any hero encounters such a situation, I am afraid that he will also lose his troops, even if there are flying troops, but he must be able to catch up with the black dragon.

Perhaps only heroes with level 7 troops can fight against such tactics, such as Queen Catherine can let angels deal with the black dragon, so that the opposing hero can't just sit on the back of the black dragon.

But now that there are only Zhu Linglu and Cai Rong'er, there is no need to think about such a thing.

If he really encountered such a hero, maybe Zhu Linglu Cai Rong'er could only find a way to attack that hero directly, but with the protection of the black dragon, the threat of this attack was really weak.

So when Zhu Linglu thought of such a situation, he was really a little afraid in his heart, if he really encountered a main force of the underground clan with a black dragon, Zhu Linglu felt that the best way for Zi and Cai Rong'er was to flee for their lives......