Several people gathered around the entrance of the cave, and the rumbling sound completely suppressed their words, and they could only hear them clearly by shouting in their ears.

"Outside, it should be the underground river and the underground waterfall, Xia Ying, pop out a few lights, it's too dark, you can't see it!" Mo Yun shouted loudly next to Xia Ying's ear.

"Good!" Xia Ying shouted, and then a flare gun appeared in her hand, and she raised her hand and fired three flares outward.

The flare flew out with a tail flame, and then exploded with a bang, and in an instant the outside of the cave was as bright as day! The four of them all squinted their eyes and looked out, but this look was completely shocked!

This is a super huge karst cave space, the height from the top is at least two hundred meters away, and the opposite cave wall is at least seven or eight hundred meters away from them, and it is covered with large or small karst caves, which look like honeycombs. And looking left and right, the cave wall they were on, like the other side, was like a honeycomb.

Below is an incomparably wide underground dark river, the river surface is at least a hundred meters away from them, and the river water directly touches the cave walls on both sides, flowing forward with a bang. On their right-hand side, about two or three hundred meters away from them, is an incomparably spectacular underground waterfall.

This waterfall is poured down directly from a wide crack high up, the amount of water is amazing, and the crack is at least more than 200 meters away from the river water surface below, at least more than 300 meters, the waterfall smashed on the water surface of the dark river, splashing countless splashes, the rumbling sound is simply deafening!

After more than twenty seconds, the flare fell to the surface of the water and went out, and the surroundings were plunged into darkness again, except for the rumbling sound.

The four of them gathered at the entrance of the cave, all of them were a little stunned. This underground waterfall shocked them, two or three hundred meters high, seven or eight hundred meters wide, and it is also a complete waterfall, not a group of waterfalls, the waterfall that falls like a white horse, it is simply not like all in the world, and the majesty alone is not enough to describe!

"There are no wonders in the world...... Xia Ying said with a sigh, "There are such wonders in this underground, it's simply breathtaking!" ”

"Xia Ying, you shoot another flare, I'll take a closer look at where that damn guy went. There are so many holes here! Mo Yun said depressedly, "This guy is really difficult to go there, I'm depressed, isn't it good for this obedient to come out?" What are you doing here......

A flare shot out, and the outside became like daylight again, Mo Yun tried his best to identify the faint trace of evil in the wet moisture, a flare burned out, he also found a trace, but the entrance he found made him scold angrily.

"Meow, damn it!" Mo Yun said angrily, "This guy is really in the water!" I actually went down the waterway, meow, it belongs to the fish! ”

"Going down the waterway?" Nangong Yingluo's brows furrowed, "What does this guy want to do?" There's no reason why you came here with all the hard work......"

"Maybe we've got a neurotic?" Xia Ying also smiled bitterly, "Let's continue to chase, we will know what it is going to do when we catch up!" ”

Mo Yun shook his head helplessly, and said to Xia Ying, "You can copy the ship, right?" It would be nice if there was no boat......"

"Yes, I can replicate a small assault boat." Xia Ying nodded, "But you still have to go down first...... When I talked about the river, our level was more than 50 meters below the water level! ”

"Maybe we'll have to go down!" Mo Yun pursed his lips, "This underground river generally flows downstream...... Hopefully we'll find another exit, or we'll be really tired if we go back the way we came......"

While speaking, Mo Yun and Nangong Yingluo flew down with Xia Ying and Leng Aoyun, and when they reached the water, Xia Ying waved his hand to copy a small assault boat, and the four of them fell on the boat, and then they were swept forward by the current, and directly roared forward for a few kilometers, which gradually eased down.

"Oh my God, this is exciting!" Xia Ying held the rudder tightly and said with a wry smile, "I feel like I'm surfing on the sea......

"I feel like I'm going to vomit......" Leng Aoyun held on to the side of the boat tightly, his face was a little ugly. The bumps just now were so bad that even he couldn't stand it anymore......

"You see, there's a hole in front of you." Nangong Yingluo had been looking ahead, and at this moment, through the searchlight overhead, she vaguely saw a black hole.

Xia Ying directly fired a flare, and under the light of the flare, they finally saw the situation in front clearly...... Where is this hole, it is clearly a big mouth!

Or rather, it's the open mouth of a gigantic snake! Rows of sharp teeth, reflecting the cold light of the forest under the light of the flares!

Strangely, however, the snake is lying horizontally, that is, its mouth is open left and right, not up and down.

"Oh my God, what is this?" Xia Ying was startled, but then she saw the snake hyacinth about the thickness of an ordinary person's arm hanging in the water, floating with the current, and immediately relieved, "It turns out that this guy is dead, scared me to death!" ”

"How can there be such a big snake!" Leng Aoyun stood on the boat, looking at it with a little lighting light in the end, this snake was as tall as a person with its mouth lying horizontally, this was simply the legendary dragon! How can there be such a big snake in the world, and this snake is still dead!

"Xia Ying, get two powerful searchlights out." Mo Yun said.

"Okay!" Xia Ying didn't say a word, and with a wave of her hand, she got two hernia searchlights out, and the two straight rays shot out.

At this time, the boat had already floated along the current to the side of the huge snake corpse, Mo Yun took the searchlight and looked at it carefully, and then sighed, "We didn't go the wrong way, this candle dragon should have been killed by the monster we were looking for." The eye was fatal in one blow, and there were no other wounds, so I could see that the monster should be in a hurry......"

"Master, you said this is a candle dragon? The legendary candle dragon that opens its eyes for day and closes its eyes for night? Leng Aoyun was surprised.

"That's right, it's a candle dragon, but it's still in its juvenile stage, and it's called Candle Nine Yin at most." Mo Yun explained, looking at the huge body of the candle dragon, his brows were also furrowed, and he thought to himself, "I didn't expect that there would be these alien species in this mortal world, but shouldn't the candle nine yin all survive in a place where the yin qi is full of dead air?" How the hell did it come to live here? ”