The reminder of the dragon baby made the two of them very happy, and they finally walked out of the scope of the cave after walking for so long.

"How far are we from the direction of the flowing water?" Wang Kai asked excitedly.

"It's close, about a few hundred meters away." The dragon baby replied.

Only a few hundred meters, that is not a distance, Wang Kai was happy in his heart, and stepped up his pace.

The terrain continued to decline, and Wang Kai and Xiao Ning trotted all the way with the help of the firelight bead.

After running a few hundred meters, he heard the sound of running water in his ears.

"It's the river." Xiao Ning also heard it.

"It's an underground river." Wang Kai nodded.

The two of them continued to walk forward excitedly, and gradually the sound of flowing water became louder and louder, and in the end, it turned out to be a loud rumbling sound!

At the end of the cave, the eyes of the two suddenly opened up, and in front of them was a wide underground river.

And what they see is the source of this dark river ...

A thick waterfall hangs upside down on a tall underground cliff, and the water falls from a height of tens of meters, smashing into the deep dark river, making a loud noise in the enclosed underground space!

The wet mist was flying all over the underground space, and Wang Kai and Xiao Ning's hair was instantly soaked.

The dragon baby was in front of the two of them, and the strange thing was that the mist avoided her, and there was not even a trace of water on her body...

"Where is this, and how are we going to get there?" Xiao Ning said suspiciously.

"It's underground, but I don't know where." Wang Kai felt that this place was so familiar, but he couldn't find it, but the moment he saw this underground dark river, he suddenly remembered.

Here, it seems that the dark river that entered the Dragon Palace at the beginning, but the original river was in the middle section, and the current river should be the source!

As for what happened on the other side of the river, Wang Kai didn't dare to think about it, if it was the Dragon Palace again, he would be dead!

Wang Kai knew that if he wanted to go over, he could only jump into the water and swim over, but the dragon didn't know if it was still there?

The thought of this immediately sent chills through his heart.

"Wang Kai, how did you get over?" Xiao Ning saw him staying there and asked again.

"Ahem, there is probably something in this water, let's go back." Wang Kai retreated.

"Something in the water? How do you know? Have you ever been? Xiao Ning asked three questions in a row, which directly stunned him.

"I... Guessed. Wang Kai laughed.

"You don't want to trick me into going back, and you go on an expedition alone, right?" Xiao Ning's face immediately turned cloudy.

"Yes, brother, there's nothing in this water." The dragon baby stared at the churning water for a while, and turned around and said strangely.

"Nothing?" Wang Kai heard the little beauty say the same, and the last trace of anxiety in his heart finally disappeared.

As long as the dragon is not there, his guts are fat again.

"It's okay brother, I can take you and my sister across the river." Long Ying thought that he couldn't cross this torrent of the big river, and volunteered.

"Really, that's great." Xiao Ning was shocked when he saw the momentum of this dark river, and it was a big trouble to swim over.

"Why did you take me there?" Wang Kai was puzzled.

"You jump first, and the rest is up to me." Long Yingjiao said with a smile.

Wang Kai and Xiao Ning glanced at each other, and finally chose to believe the little beauty's words.

The two of them stood by the dark river, looking at the whirlpools formed by the high-speed impact of the waterfall, even Wang Kai, a person with good water quality, was dizzy in his eyes.

Wang Kai motioned for Xiao Ning to give him his hand, took her hand, and the two jumped off the river bank at the same time!

Puff...

Two dull sounds of falling water, they jumped into the water at the same time...

As soon as Wang Kai entered the water, he felt that countless undercurrents under the dark river were tearing his body down, and he was caught off guard by being filled with two mouthfuls of river water in a row!

Xiao Ning beside him was even worse, his slender body was pulled directly to the bottom of the river, Wang Kai was shocked, and grabbed her hand desperately, and the two of them were pulled into the whirlpool in the river at the same time!

The stamina bar on the heads of the two of them dropped sharply in an instant, turning into a crimson dangerous state!

Just when Wang Kai was panicking, he suddenly heard a loud bang in his ears, a pair of golden dragon claws reached into the water, and one claw scooped him and Xiao Ning out of the water, and flew into the air.

At a critical moment, the dragon baby turned into a dragon and saved the lives of the two!

With a feeling of soaring clouds and mist, the two of them were dragged in the air and flew across the dark river, and the little golden dragon flying above the sky landed on the opposite bank of the dark river, gently placing the two on the ground.

Xiao Ning was lying on the ground weakly, the drowning just now frightened her, the feeling that the real life was completely out of control, and the experience was enough to make people frightened.

"Brother and sister, are you all right?" With a flash of golden light, the dragon baby returned to its humanoid form and asked with concern.

"It's okay, it's okay." Wang Kai picked up Xiao Ning and looked into the distance...

On the other side of the dark river, there is a huge karst cave space, with glittering stone stalactites, the sound of dripping water, and the ground is slippery bluestone ground.

But there is a lot more light on this side of the river.

I don't know where the light reflected by the stone stalactites came from, but the visibility here is slightly brighter than on the other side of the river, so you can see the surroundings without taking out the firelight beads.

On the underground stone wall in front of you, a wide cave has appeared!

The more Wang Kai looked, the more frightened he became, the scene here was really the same as the environment he saw when he first found the Dragon Palace!

"Let's go ahead and have a look." Xiao Ning regained his senses and immediately became curious about this place.

Wang Kai had a plan in his heart, he went to see it first, if it was really the Dragon Palace in front of him, it would be too late to run.

But he wondered, how could this ordinary cave that he accidentally discovered be connected to the underground passage?

Could it be that I really stumbled upon another hidden place by mistake!

He was still thinking, but Xiao Ning had already set off to explore the way first, and Wang Kai had to put the doubts aside first and quickly catch up.

As he ran, he summoned several summoned beasts to protect him at any time, and soon caught up with Xiao Ning.

"Don't run around, beware of danger." Wang Kai warned her, but found that the temperature in front of her was getting higher and higher!

"It looks like it's hot up ahead." Xiao Ning reminded.

Wang Kai nodded, he also found something strange, after walking such a distance, he could be sure that this was not the import of the Dragon Palace.

The surrounding environment is completely different from the beginning, especially the higher and higher temperatures, and it is even more unlikely that it is the underground Dragon Palace that you accidentally broke into at the beginning.

Wang Kai's last trace of fear was gone, and curiosity gradually prevailed again.

"Let's go, see what's ahead." Wang Kai ran out first.

The three of them rushed forward along the passage of the cave, feeling that the temperature was even higher, first the warm wind gently hit their faces, and then after moving forward for hundreds of meters, they felt that the wind blowing on their faces was already scorching!

Wang Kai stopped and hesitated, now that his hands and feet were exposed outside his clothes, his face was getting hotter and hotter, and he was considering whether to continue walking.

"Let's go, what are you doing in a daze?" Xiao Ning's curiosity was stronger than his.

"You're not afraid of turning into a roast suckling pig." Wang Kai said speechlessly, but stepped forward again.

I found this one before, and it wasn't his style to give up halfway.

The hundreds of meters ahead of them were far more difficult than the thousands of meters they had already walked.

Just walked 20 meters, the temperature has been roasted and the hands and feet are slightly painful!

After walking 50 meters, the number of injuries began to appear on the heads of the two people!

-100

-100

．．．．．．

"I'm dizzy, this can't be a volcano, it's so hot." Xiao Ning couldn't help but complain, took out a Life Creation Pill from his bag and ate it, and finally stopped the continuous bleeding.

"If the situation is not right, we will go back to the city." Wang Kai also took a pill to learn from her.

They endured the scorching temperature, forced their way through 50 meters and turned a corner, and finally saw a shocking scene!

The previous was the same as Xiao Ning's guess, and in front of the two of them was a vast sea of fire!

This sea of fire with no end in sight, there are countless dark red magma tumbling inside, and the whole space is like a huge steamer, and the air inside is so hot that people can't breathe.

Wang Kai was dumbfounded when he saw this sea of fire, there was no road here at all!

Could it be that I ran for a long time and spent so much energy just to see this magma sea?

"How did you get here?" Xiao Ning was still thinking about how to go through the sea of fire to take a look at the other side.

"Let's look around the neighborhood." Wang Kai's eyes searched around, looking for the system's hidden help.

The two searched separately, leaving Long Ying standing by the sea of fire and watching curiously.

Wang Kai chose the stone wall on the right side, and as soon as he tried to reach out and grope for it, he heard a 'snort', and a sharp pain came from the palm of his hand.

It turns out that the stone wall has been roasted red by the sea of fire!

"Xiao Ning is careful of the stone wall, the temperature is very high, if you want to eat teppanyaki, you can touch it." Wang Kai reminded loudly.

"Uh-huh." The ice beauty said she knew.

After suffering a loss, he didn't dare to touch the stone wall with his hands anymore, so he had to rely on his eyes to search on it, trying to find strange places.

This glorious stone wall has been roasted by a fire for an unknown number of years, and the stone surface has been baked dark red, but what makes Wang Kai feel a little excited is that some irregular patterns have been found on the stone wall!

These patterns are ingraved on the stone wall, and it is a bit reluctant to say that they are naturally formed, because many of the patterns on the stone wall are very complex, but a bit like hieroglyphs.

It is said that it is artificially depicted, it is too perverted, the stone walls around it are tens of thousands of square meters, who has the ability to engrave all the patterns on such a large area of stone walls?

Wang Kai stared carefully at these messy lines and patterns, he knew in his heart that the secret of the sea of fire was hidden in these patterns!

"There are a lot of characters here, Wang Kai, come and take a look." Xiao Ning exclaimed as she found something strange on the stone face.

"Is it some hieroglyphs or something?" Wang Kai replied.

"You have that too?" Xiao Ning was puzzled.

"There's all on the stone walls here, but we don't know each other." Wang Kai was speechless.

The two of them had to look at the shapes on the stone wall that no one knew, trying to find some clues.

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