Along the way, the two have been talking about their next plans.

Knowing that the senior brother deliberately chose a completely different exploration direction from others for himself, Zhang Yun's heart was warm, and he didn't know how to express his happy mood.

He took out the jade flute from the storage bag and played it on the fairy boat, and the cheerful and melodious tune spread the joy all over the vast mountains and forests with the galloping fairy boat.

Wang Chengyu closed his eyes and listened, feeling the mood in the tune, and when the song was over, he couldn't help but exclaim: "After practicing for so long, you have finally practiced, not like before, blowing a Xiao is like crying and mourning, as ugly as it sounds." ”

Hearing this evaluation, Zhang Yun couldn't cry or laugh: "That's because you didn't feel my mood, if you can understand, you should understand that I was sad at that time." ”

Wang Chengyu squinted and teased: "It's ugly, it's ugly, you have to find a reason to cover it up for yourself, you're not as innocent as before, you never said such things in the past." ”

Zhang Yun explained helplessly: "I really didn't lie to you, the tune is to express the emotion, although my skills at that time were a little rusty, but I still expressed the mood, but you don't like that mood, so I think it's ugly." ”

"Mood ......" Senior Brother pouted: "What's good about sad mood, you like it." ”

"Joy, anger and sorrow are all feelings, but some make people happy, and some need a specific state of mind to experience in order to experience a different feeling, anyway, I can accept it, it's all good." Zhang Yun said that in addition to the despair when he was abandoned, he really likes to experience all kinds of emotions, including parting and sadness.

"You know a lot, when I don't know anything, do you?"

Wang Chengyu smiled and teased, it was rare for Zhang Yun to become active when he was in that mood, and he was happy to tease him a few words.

Although Zhang Yun knew the thoughts of the senior brother, he was also willing to cooperate, so he came to the newly discovered secret realm in laughter.

"I don't know if I mentioned it to you before, there are two levels of secret realms, one is the secret realm that can only be entered during the qi refining period and below the qi refining period, and the other is the secret realm that can only be set foot in at the beginning of the foundation building period. Needless to say, you already know enough about the former, but for the latter, Senior Brother still has to emphasize it to you. ”

Before entering the new secret realm, Wang Chengyu solemnly explained: "From the foundation building period, there will be no cultivation in the secret realm, and anyone who cultivates can enter the secret realm, including demon beasts and alien races.

This also means that the demon beasts we will encounter in the future may be far stronger than we imagined. It may be a demon beast in the Jindan stage, or it may be in the Yuan Infant stage, or even a demon beast in the god transformation stage.

Senior brother is not telling you this to scare you, but to make you mentally prepared.

Generally speaking, most of those high-level demon beasts will not pay attention to us when they find us, just like we human monks, when we encounter monks who are not a threat to us, most of them will not choose to take action.

But if we offend its majesty, it is not necessarily, so we must discern what we can provoke and what we cannot afford to provoke.

Of course, in most cases, we don't have that chance to encounter too strong monsters.

After all, the advancement of demon beasts is also very difficult, and there are not so many demon beasts in this world that have cultivated to be powerful.

But there's nothing wrong with being careful, it's always right......"

……

Listening to the senior brother's explanation, Zhang Yun had a doubt in his heart, and when Wang Chengyu finished speaking, he immediately asked.

"Senior brother, can you tell me why there is a restriction on cultivation? I always think this is very strange, the secret realm that can be entered during the Qi refining period, but the foundation building period cannot be entered, but after the foundation is built, there is no such difference, why is there such a phenomenon? ”

Many things, if you don't think about them carefully, are a natural phenomenon and a kind of common sense that is recognized in the spiritual world.

But if you dig deeper, you will find that this phenomenon is very strange and unpredictable.

Wang Chengyu seemed to know a little about these, and when he heard Zhang Yun's question, he quickly gave an answer.

"It's very simple, before the foundation is built, it is a physical mortal body, and after the foundation is built, the body is another form, you must have sensed it, after the foundation building period, we can no longer be called a human being, but another species, based on this reason, we can't go where the physical body can go, and where we can go, those physical mortal bodies can't set foot in."

This answer was very rough, but it made Zhang Yun understand the difference to a certain extent.

Indeed, before and after the foundation was built, the body did undergo some qualitative changes.

If it is said that before the foundation is built, then the body after the foundation is built, and the main composition of the body is the meridians and true elements created by the aura.

Although there is no difference in shape, the substance has changed radically.

Although the body and blood are still there, the meaning of their existence has become existence itself, and there is no other meaning.

Even if there is no flesh and blood, the monks in the foundation building period can still live, and it will not have any impact on themselves, which is quite a big difference.

Zhang Yun nodded, indicating that he understood the answer, and then he asked a second question.

"Senior brother, what is the secret realm? Why does it appear in the Vast Mountains, and only in the Vast Mountains? Is the space in the secret realm still our world? Why are there completely different rules in various secret realms? Not to mention the alternation of the sun and the moon, not to mention the change of the four seasons, how did those complex rules come to be? Why is there a variety of strange trials in the secret realm of trials, and they can also give corresponding rewards according to our spiritual roots, and rewards will be given according to the degree of our trials? I'm very curious about these, senior brother, can you expand and talk about it? ”

When Zhang Yun first started asking questions, Wang Chengyu was ready to make a long speech.

But as soon as he heard Zhang Yun's question, he was stunned.

"What do you say is the secret realm, the secret realm is the secret realm, what else can it be? As for why it is in the Vast Mountain, because it is in the Vast Mountain, why do you have to ask why? Isn't that common sense? As for the rules, you don't care so much about what to do, as long as we understand the rules and act according to the rules, wouldn't it? Curious how it came to be? You ask me? I'd like to ask someone else......"

Wang Chengyu didn't even think about these questions raised by Zhang Yun.

For him, these are natural phenomena that have existed in the first place, and people have discovered them and named them secret places, so it has become secret places.

As for why it exists and how it came to be, how do you know about it?

Except for Zhang Yun, Wang Chengyu has never seen anyone care about this question, let alone try to explain the answers to these questions.