After listening to her grandmother's explanation, Li Yu finally understood what kind of existence the so-called underground army was.

"Grandma, where are my parents? Where are they now? ”

Li Yu asked.

The situation of his parents is what he is most concerned about.

"Your parents ......"

Wang Guizhi's face showed a gloomy and sad color, "They accidentally got lost with the large army during an operation, and their whereabouts are still unknown......

"So they're missing?"

Li Yu frowned slightly.

"Well, so to speak!"

Wang Guizhi nodded, "Over the years, the people of the Dark Dragon Legion have been helping us find your parents, but there has been no news, however, no news, it is actually good news, at least, it shows that they still have a trace of possibility to live!" ”

"Grandma, how do you get to that underworld?"

Li Yu asked eagerly.

Since his parents may still be alive, he naturally must find a way to find them.

"Good grandson, what do you want to do? Do you still want to go to the underworld to find them? If that's the case, don't think about it! Because the danger of the underground world is far greater than you can imagine! It's a different world from our surface world! It's full of carnage and brutal fighting, and it's definitely not a place for ordinary people to go! Even your grandmother and I don't dare to go to the underground world easily now! ”

Wang Guizhi smiled bitterly.

"Oh? Is it? Grandma, can you tell me how dangerous it really is? ”

Li Yu smiled indifferently.

You know, he's not an ordinary person either.

A place that is very dangerous for ordinary people, for him, not necessarily.

Of course, it doesn't hurt to learn more about the underworld before you go.

"Okay, good grandson, I'll tell you a little bit about the horror of the underground world!"

Wang Guizhi nodded, "In the underground world, there are not only all kinds of powerful demons, but also many different legions, the Dark Dragon Legion is just one legion of our Kyushu Kingdom, and there are many legions in it that are not friendly, or even hostile to us!" And most importantly, there is almost no order and law there, it is all spoken with fists! Many people in the underworld did not actually die at the hands of demons, but were killed by other humans! In short, the danger there is unguardable, and even those who are powerful do not dare to move around at will! ”

"Grandma, how strong are those demons? In addition, is there a distinction between human beings and between strong and weak strengths, and how do other people compare to you? ”

Li Yu asked.

"The strength of demons and humans is high and low!"

Wang Guizhi explained, "In the underground world, the division of strength is very simple, whether it is a demon or a human being, it is divided into first, second, third and so on according to the strength of the strength! Your grandmother and I are now a second-level warrior! I'm in the underground world, I can only be regarded as average, or even lower-middle, because some of the top powerhouses in it, I may not have come into contact with it yet! There are people who are stronger than me! Your parents are better than me, they were both third-level humans at that time, and they all held the position of squad leader in the legion, and there were more than a dozen second-level humans under their hands! No matter how strong it is, it is the fourth-level captain and the fifth-level commander! As for whether there is a sixth level, or even the existence of a sixth level or above, I'm not sure! ”

"That's ......"

Li Yu groaned.

The strength that grandma showed just now is probably equivalent to that of a silver special policeman.

If it is said that the second-level human corresponds to the silver special police, the first-level human corresponds to the bronze special police.

Then the third-level human being, I'm afraid it may correspond to the golden special police!

That is, his current strength!

If you look at it this way, he is only at the middle level in the underground world.

In the past, it would indeed be more dangerous!

But since this matter is related to his parents, it is natural that he has nothing to say, no matter how dangerous it is, he will go and see it.

"Grandma, are the strength of those demons innate? Also, how do humans get stronger? ”

Li Yu said curiously.

"The strength of demons is partly innate, but they can also be improved by devouring human souls the day after tomorrow!"

Wang Guizhi explained, "As for human beings...... It is improved by devouring the flesh and blood of demons, plus training! The human soul is a great tonic for demons, and the flesh and blood of demons are also a great tonic for human beings! The purpose of exercise is mainly to promote digestion and absorption, and speed up the speed of becoming stronger! ”

"There is still such an operation...... Exercise? How to exercise? Could it be that there are any other exercises? ”

Li Yu asked.

"What's the practice? Do you think this is cultivating immortals? ”

Wang Guizhi shook his head and smiled, "The way human exercise is very simple, it is just ordinary physical exercise, similar to fitness, but the intensity is much greater!" Especially when breaking through the shackles between levels, you have to exercise desperately and devour a large amount of demon flesh and blood! In addition, in the underground world, there are some magical treasures that can also improve the strength of human beings, such as some thousand-year-old Lingzhi and the like! ”

"That's right...... I understand! ”

Li Yu nodded.

"Ahem! Cough! ……”

At this moment, his grandmother Wang Guizhi suddenly covered her mouth with her hands and coughed a few times.

After taking away his hand, a piece of blood appeared in his palm.

"Grandma, what's wrong with you?"

Li Yu was taken aback.

"Hehe, it's nothing, the last time I went on a trip, I didn't accept my old age, and I secretly went to the underground world again, and I was injured by a few demons! Leave me alone, I'm about to go into the ground anyway, so this injury is nothing! ”

Wang Guizhi shook his head and smiled.

"Grandma, wait a minute!"

Li Yu said with a solemn expression, and then stood up directly and walked to the kitchen.

It's all vomiting blood, and it's nothing?

With such a serious injury, he naturally wouldn't let it go.

After a while, he came out with a glass of water.

The water in the cup was the water of life that he had secretly taken out.

"Grandma, drink saliva!"

Li Yu handed the cup to her grandmother.

"Hmm!"

Wang Guizhi nodded, and then took a sip.

“……”

As soon as he drank it, Wang Guizhi's eyes suddenly widened, and he looked at the glass of water in his hand in disbelief.

Because the moment she drank this saliva, the injuries in her body were healed instantly!

Even, even the strength that had been stagnant for a long time actually increased by a bit, directly reaching the peak of the second-level human race!

Judging from this situation, if she drank this glass of water, she would definitely be able to break through directly to become a third-level human!