Chen Fengyun's speed was the fastest, like a bolt of lightning rushing towards the mountain peak in the distance, and although the underground world was gray, the more he ran to the top of the mountain, the more he could see that the gray clouds above his head were actually thick rock formations.

"Boom ......"

The flood in the distance came violently, and soon encountered a crack in the dungeon, and the momentum of the wild run was blocked, but soon the crack was submerged, and it continued to spread towards the position of the mountain peak.

"Why is there so much water all of a sudden? Could it be that the waterhole outside has started to flow again?" asked someone with a pale face.

"This dungeon is supposed to be connected to some huge body of water, didn't we have a defensive shield before we came in? So it wasn't flooded, and now the defensive shield has been destroyed by us, so there's a flood coming in, right?" someone speculated.

"What now? Aren't we going to be trapped and die underground? If the water floods the dungeon, I'm afraid even the strong grandmasters won't be able to sneak back, right?"

"Fengyun, what do you say now?" Martin came directly to discuss with Chen Fengyun.

"Yes, Mr. Chen, I don't know if you have a way to get out?" The other Grandmaster powerhouses all gathered around Chen Fengyun.

Chen Fengyun did not answer, but his divine sense extended towards the top of his head, and found that the mountain peak was only more than 100 meters away from the rock formation above his head, and there was a dark river outside the rock formation, which was only separated by a rock layer more than 20 meters thick.

"I can take everybody out, but I need your cooperation with me. Chen Fengyun nodded, although he had his own way to get out, but without the help of other Sect Masters and powerhouses, he might not be able to take the people of the Southern Sect out, so he chose to cooperate with everyone.

"Mr. Chen, please instruct us, as long as we can go out, we will definitely thank Mr. Chen. ”

"Yes, Mr. Chen's move is undoubtedly a life-saving grace, and if there is any need to use us in the future, please ask Mr. Chen to speak. ”

"Thank you, Mr. Chen, we are willing to cooperate. ”

Everyone said that Chen Fengyun then launched an attack on the side of his head, breaking through a rock formation more than two meters and falling large stones and dirt.

"Let's attack this position together, there is a dark river outside, as long as we break through here, we can go out and leave the underground through the dark river. Chen Fengyun said to everyone.

"Boom ......"

As a result, many Grandmaster powerhouses attacked the rock formation together under his organization, but not only did the rock formation continue to collapse and drop the rock and soil, but there were a large number of rocks and mud on the top of the head that fell down, almost hitting the people on the mountain peak.

"Oh no, the flood is coming. Someone exclaimed, and everyone found that the flood was only a few meters away from the position of everyone on the top of the mountain, and they were afraid that the flood would flood this place before the passage above was broken.

"Don't panic, everyone, I'll set up a defensive formation, you continue to attack above, and the others pay attention to their precautions, don't be hit by rocks. Chen Fengyun was not alarmed, and commanded everyone to say.

His current formation knowledge has reached the tenth order of the mortal level, but it is enough to arrange a small defensive formation, and he also has some formation bases and the like on him, which have been found in the underground before.

Chen Fengyun took out the six formation bases, arranged a Liuhe Locking Yang Array around everyone, and even spent a lot of spiritual energy to integrate into the formation base, and when the flood flooded everyone's position, the defensive light mask lit up, excluding the flood.

"Boom ......"

Then, Chen Fengyun summoned the earth dragon and asked it to help attack the rock layer above, the earth dragon had rough skin and thick flesh, and after it let out a roar, it directly crashed into the rock layer above, and instantly hit a position several meters deep in the passage that everyone attacked.

By the time the flood flooded the defensive light shield around them, the earth dragon had already launched three attacks, and the last time with a loud bang, a huge rock fell from above, and a huge stream of water rushed down.

However, the flood under the ground had already submerged everyone, and the rushing water and boulder did not cause harm to everyone, and the boulder fell not far from everyone, only twenty or thirty meters away from the passage above.

"The passage has been opened, and everyone can enter the passage above through this boulder, but I hope that each Grandmaster powerhouse will help bring two or three martial artists who are not grandmasters up. Chen Fengyun immediately said to everyone, because the defensive formation couldn't be managed for long.

Everyone took action, Chen Fengyun took the lead, took Chu Wangshu and Ye Mingfu, quickly rushed out of the defensive light shield, then climbed the boulder, and then rushed to the sky, leading the two of them to rush out of the ground through the passage above, and then exposed the water, and found that although the surroundings were a little dim, it was a huge karst cave.

Behind him, Feng Tianbao took Yang Wanshi and Liang Lungang to follow, then Ye Bufan came up with Ye Yunfeng, Martin Dang took two disciples of the Northern Sect, Hong Chongshan took Wan Jianlin and others, and the remaining disciples of the Northern Sect were brought by other powerhouses, and they all rushed up.

"Hahaha, we're finally out and won't be trapped underground. Someone laughed, and everyone had a feeling of escape.

"All underground rivers actually lead to surface water bodies, so we should be able to go back to the surface as long as we follow them. "Everybody was very excited.

"Fengyun, do you think we should go that way?" Martin asked as he stood beside Chen Fengyun.

When Chen Fengyun had already rushed out of the dark river, his divine sense had already swept towards both ends of the dark river, and found that along the lower reaches of the dark river, the light would become dimmer and dimmer, and the light in the upper reaches of the dark river would become darker and brighter.

"Let's go upstream. Therefore, Chen Fengyun pointed upstream, and then led the people of the Southern Sect upstream.

The water of the dark river is only more than one meter deep, the water is not turbulent, and there is a river beach by the river, everyone went up to the river beach and began to run quickly upstream, very fast.

There are nine strong grandmasters in this group of people, and the strength of those martial artists is not weak, everyone is in the dim underground, and they can also see the surrounding situation clearly, so they ran more than ten kilometers in more than ten minutes, and sure enough, the light in front of them is getting brighter and brighter.

"...... Uproar"

Moreover, unlike the dull sound of water that I heard when I just rushed out of the dark river, there was a loud sound of water flowing ahead, as if there was a waterfall in front of me, which made everyone's mood happy, and they were getting closer and closer to leaving the ground.

Sure enough, a few minutes later, everyone drove to the source of the dark river, a huge waterhole similar to a sinkhole, about the size of two football fields, surrounded by waterfalls more than ten meters high flowing down, the sound was huge and magnificent.

"Could it be that this is the Tiankeng group near Tianchi in Changbai Mountain?" the people of the northern faction exclaimed, they were all northerners, and they had a clear understanding of the geography of Changbai Mountain.