After more than ten years on the mountain, you will become invincible when you come down.

Huo Yan was so angry that he was out of breath. The Heavenly Fire Sect regarded the strange fire as a treasure. You took it back and used it for cooking in the service room. Is this something done by humans?

"Hmph! We'll see! After you go in, let's see if you can come out alive!" Huo Yan snorted coldly.

"It's not certain that anyone will be able to come out alive. Maybe this time, even no one from your Tianhuo Sect will be able to come out..." Lu Feng said.

"Haha... I'm afraid you don't know yet, right? When has anyone from your Qingyun Sect been able to come out smoothly? I think you should give up as soon as possible and don't go in, otherwise the line of sky is likely to be your burial place..." Huo Yan sneered.

Lu Feng stopped paying attention to Huo Yan. Anyway, Liang Zi had already formed a knot. No matter what, whether he wanted the strange fire or not, Lu Feng was not going to let them get the strange fire...

If the Sky Fire Sect cannot obtain a large amount of strange fire in time, I am afraid that the Sky Fire Sect will naturally decline without anyone taking action...

At this moment, Xunxingchen and the sect leaders of several other sects saw that the time was almost up and began to open the sky...

"The old rule is that after the first line of sky opens, it will close after one month. Master the time and come out before the first line of sky closes. Otherwise, if you want to come out again, you will have to wait until the next time it opens. Remember!" Xunxingchen reminded! road.

One month, that is one month in the outside world. In fact, it is ten months in the first line of sky. The inside of the first line of sky is very big. Even if it takes ten months, if you want to explore it completely, Obviously it's not possible...

Xunxingchen looked around for a week, and after seeing that no one had any objections, he turned around, took out a key-shaped thing, and injected his own magical power...

The other sect masters also took out their own keys one after another. The keys in the hands of the four of them were all the same, there was no difference, and they poured in their immortal power...

Just after they injected the immortal power, the 9 keys in their hands began to emit dazzling light...

The four keys flew into the air one after another, and each of them shot out a ray of light, shooting in the same direction...

"Rumble...Rumble..."

As the four rays of light converged at one point, the heaven and earth began to make a "rumbling" sound, and the heaven and earth seemed to begin to tremble. The sky in the distance began to become distorted...

After about ten minutes, the light that had been gathering for more than ten minutes suddenly exploded in both directions. A long line of light appeared in the sky, as if the sky was divided into two halves...

Soon, the upper and lower spaces began to slowly tear apart, and a crack that stretched for dozens of miles gradually formed.

Lu Feng was stunned. It seemed that it was because of this that this secret realm was called Yixiantian...

Everyone stared at the crack without blinking, their eyes gleaming, looking forward to the expansion of the crack...

About half an hour later, the crack that stretched for dozens of miles was already as tall as a person, and there was a faint light around the crack...

"The sky is open, you can go in soon..." Everyone around said excitedly.

"Hehe...heaven and earth treasure, supreme opportunity, here I come..."

"Everyone is the hope of our Northern Territory. This time, the first line of sky is opened in advance to better resist the invasion of dark creatures. Here, I wish everyone can find the opportunity that suits them by entering the first line of sky and contribute to the Northern Territory and the fairy world in the future. Now, you can freely enter and leave the sky..." Xun Xingchen announced.

As Xun Xingchen's words fell, a dense crowd of figures rushed into the crack impatiently...

"Lu Feng, Su Yao, Chen Haoran, it's time for you to go in. Pay attention to safety!" Sect Leader Lin warned.

Lu Feng and the other two looked at each other and flew towards the crack together holding hands.

Because after entering the sky, although everyone flew in from the same place, if you don't hold each other's hand tightly, the places where they randomly fall may not necessarily be together.

This is also to prevent them from crowding together as soon as they enter the first line of sky, and to avoid conflicts between them...

As for Lu Feng and the others, there are only three of them. If they are too scattered, it will be difficult for the three of them to find each other. It is difficult for the people of Qingyun Sect to come in and they cannot gather quickly. With the strength of Su Yao and Chen Haoran, here If you encounter people from other sects inside, it may be difficult to survive...

After entering the first-line sky, Lu Feng and the others discovered that there was a cave like no other here, with mountains, rivers, and lakes everywhere, and the fairy aura was several times richer than outside.

The further they walked inside, the more the three of them felt that this place was not simple.

On the way, they encountered many rare elixirs, but they were also attacked by fairy beasts. However, those fairy beasts, perhaps due to peripheral reasons, were not very strong. A few people were able to solve them easily without causing trouble. Too much movement...

In a valley, Lu Feng and the others discovered an ancient cave. The door was closed and there was a mysterious atmosphere surrounding it.

Lu Feng decided to step forward to check. When he approached the cave door, a powerful force knocked him back several steps.

"This cave seems to be protected by a formation." Su Yao stepped forward and observed the cave door carefully.

Chen Haoran cast spells and tried to break the formation, but to no avail.

But if you want to enter this cave, you must first break through the cave's protective formation...

"Son of God, what should I do? Do you want to go in?" Su Yao asked.

"There is a formation guarding it, which means that this cave should not be simple. Otherwise, there would be no need to spend so much effort to find a way to break the formation. There should be some chance..." Lu Feng said.

"I'll try again and see if I can break it with violence!" Chen Haoran said and smacked it.

There was a sound of "Bang!"

Chen Haoran flew out directly, and the formation only shook slightly twice before returning to calm. All the energy of Chen Haoran's palm just now was bounced back, and this palm was equivalent to hitting himself. on body...

Chen Haoran was not convinced and moved forward again, accumulating strength and preparing for another fierce attack.

"Don't waste your efforts. The harder you use it, the worse you will be beaten later. This formation will rebound all your power. Unless you can exceed the limit of this formation and violently break it, but obviously you can't. Therefore, this formation can only be lifted by other methods..." Lu Feng stopped.

"Then what should we do? Is there any other way to dissolve this formation?" Chen Haoran asked in confusion.

For a moment, Lu Feng was also in a dilemma, because Lu Feng had not yet figured out how to break this formation...