Ling Tao, who was in the mountain, didn't know anything about the things in the base city, and at this time he was staring nervously at the stalagmite on the top of the cave, and in a click, the stalagmite that had not had the slightest gap actually slowly shrank towards the top of the cave.

Finally, with a crisp click, the stalagmites completely disappeared on the roof of the cave, leaving only the fist-sized night pearl inlaid on the roof of the cave, tightly sealed, and no trace could be seen.

"I suddenly have a feeling that we may have inadvertently discovered something that is enough to shock the world", Xue Yao looked at this scene and said dumbfounded.

Huhu ......, cough cough, Chen Gui on the side was pale, breathless, the air was scarce, and he couldn't speak, but from his expression, it could be seen that he was extremely excited at this time.

"This reminds me of the ancient tricks, which are so well hidden that it is difficult to do this even with current technology," Ling Tao squinted his eyes and said in a deep voice.

......Boom, at this time, the entire cave shook, and the movement came from the inside of the mountain.

Hearing this voice, Ling Tao and the other two were all happy, as if they saw a way out of the sealed hole in the next moment.

However, then, the inside of the cave wall was constantly shaking, and the rumbling sound was endless, accompanied by a series of tooth-aching clicks, and the rusty gears began to run anew.

I don't know why, Ling Tao suddenly had a bad feeling in his heart, this feeling came very suddenly and inexplicably.

"Everyone, be careful, come to me." Ling Tao frowned and said, although he didn't know where the bad feeling came from. But there's always nothing wrong with being careful.

Xue Yao was stunned for a moment and did not hesitate. Helping Chen Gui to stand behind Ling Tao, while Ling Tao frowned and looked around.

The next moment, Ling Tao's eyes widened, with a hellish expression, around the cave, the originally integrated mountain wall was miraculously cracked, and the clicking sound continued, on the surrounding mountain wall. There were holes the size of bowls.

"This ......", Xue Yao was shocked and dumbfounded, how could this be possible, the mountain wall was completely integrated, and there were no gaps, but now there were holes the size of bowls, as if they appeared out of thin air, it was ...... hell.

"Be careful ......". Ling Tao exclaimed in surprise at this time, without thinking about it, he pulled out the flowing water sword with a swoop and waited for it, and after the cave openings appeared on the cave wall. The bad feeling in my heart became stronger and stronger.

......, when the last sound inside the mountain wall stopped, the entire cave fell into a brief and eerie silence.

And then. Suddenly, there was a loud bang. A piercing scream rang out from the hole. Dark shadows shot out one after another, densely packed in a large area, and this kind of thing was everywhere.

His eyelids jumped, Ling Tao did not hesitate, and the flowing water sword in his hand swung like a light curtain, and the dancing flowing water sword could almost be said to be splashing water, and the speed was extremely fast.

Ding Ding Ding ......, a series of golden sounds sounded on itself, accompanied by sparks splashing, and the black shadows were blocked by the flowing water sword in Ling Tao's hand, and bounced off the cave wall with a clanging sound.

"It's ...... Crossbow bolts? Hell, how could such a thing be launched from which holes", Xue Yao muttered to herself in a daze, her face was pale, her body was trembling, if it weren't for Ling Tao splitting the crossbow arrows that came from her, she and Chen Gui would have turned into hedgehogs long ago.

That's right, what came out of the hole was a crossbow arrow, a foot long, green and faint, this is clearly a bronze cast crossbow arrow, I don't know how much time has been experienced in the dark cave wall, there is no rust, there is a layer of oil protection on the crossbow arrow, to prevent oxidation, it looks like new.

"Ahem, cough, cough......, sure enough, we seem to have made a discovery that is enough to shock the world, in this case, I am afraid that it is the tomb of a certain big man in ancient times, the mechanism is heavy, and it is too well hidden, no wonder there were no traces of artificial excavation before, bronze weapons, things from thousands of years ago, after thousands of years of changes, any traces of artificial excavation in the cave are enough to disappear in the long river of history", Chen Gui muttered to himself, due to the lack of oxygen here, his face was flushed, and it was difficult to breathe.

Xue Yao was so excited that she couldn't speak, the danger is certainly dangerous, but if you can witness a civilization that has disappeared in history, even if it is death, I'm afraid it will be worth it.

Who would have thought that in the deep mountains and old forests, on the cliffs hundreds of meters high, there is such a magical place hidden, which is clearly a huge artificial project that disappeared in history, who dominated all this in history?

However, at this time, Ling Tao's face was gloomy, there were too many crossbow arrows shot from all directions, dense, as if endless, the bronze crossbow arrows were either split or cut by him, and a layer of bronze crossbow arrows fell around them.

"Who the hell is able to make such a huge killing project, and thousands of people will be buried under these crossbow arrows in a hurry, if it weren't for the collapse of the mountain and burying the long first-order cave outside, I'm afraid the whole cave would be like this", Ling Tao said to himself while waving the flowing water sword in his hand.

Seriously, he was also shocked, this is definitely not a huge project that ordinary people can do.

Although the lethality of these crossbow arrows is amazing, it is only relative to ordinary people, to put it bluntly, the power of each crossbow arrow is much inferior to the power of ordinary pistol bullets, but it is better in terms of quantity.

And Ling Tao's third-order warrior physique, dancing the flowing water sword and splashing water, is not afraid of these crossbow arrows at all, and his strong physical fitness does not feel tired even if it is such a high-intensity exercise.

On the wall of the cave, crossbow arrows were fired, and it took almost an hour to stop, and with a clicking sound, the holes that appeared on the wall of the cave disappeared by a miracle.

Perhaps the people who designed these mechanisms thought that after such a long period of fire, no matter how many people in the cave were, they would probably be dead in time, and naturally they would not be used.

"It's a miracle, the hole disappears, you can't see the slightest trace at all, I'm afraid you have to take a magnifying glass to see the gap smaller than your hair", Xue Yao said dumbfounded.

"Awesome, if there is any secret hidden in this cave, the pearl of the night before has simply opened a lore mechanism, not a real opening mechanism, if it is an ordinary person, no matter how much it has already died here, but, after all, historical figures are only historical figures, they can't have thought that the world will change dramatically today, and the designed mechanism is only for ordinary people, and it doesn't have much effect on people like us who have strengthened the system, so it will be fine if you are careful", Ling Tao stopped swinging his sword and muttered to himself as he looked at the crossbow arrows around him.

On the ground, a dense layer is full of bronze crossbow arrows, and there are no less than hundreds of thousands!

"So ...... next"? Xue Yao looked at Ling Tao and asked, she was completely convinced, they stayed here for seven days, and the people who first discovered this place didn't know how many times they investigated here without finding the slightest clue, but they were discovered by Ling Tao, how could they not impress him.

"Next, finding a way out must be the top priority, but we also have to be more careful, if my guess is right, this cave was safe before, but the mechanism has been activated, if you can't find the right way to crack it, its danger can be called a Jedi, don't underestimate the wisdom of the ancients", Ling Tao shook his head and said, confidently looking around, not letting go of the slightest place, hoping to find a little clue.

However, just as Ling Tao's words fell, the ground under his feet shook, and in the clicking sound, the ground without the slightest gap rose up one by one, two or three meters long, made of bronze, and after rising, it was almost able to reach the top of the cave, and the gap was not even ten centimeters, ensuring that anyone who entered the cave could be skewered into a mutton skewer!

Although the lore mechanism under his feet came extremely suddenly, Ling Tao was alert at the first moment the ground shook, and the flowing water sword in his hand swung to cut off the bronze spikes rising from the surrounding ground, and the three of them survived.

But Rao is like this, and the three of them were also scared into a cold sweat, this lore mechanism is simply one ring after another, and if you don't pay attention to it, you will die without knowing how you died.

"There should be no next...... ahem...... ...... hiss", Chen Gui said on the side, because of the lack of oxygen, he struggled every word he said, and finally let out a cry of pain.

At this time, Ling Tao realized that one of his soles had been pierced by a bronze spike, and Ling Tao couldn't cover everything with a hundred secrets.

......, at this time, those rising spikes suddenly shrank to the ground and disappeared without a trace, Chen Gui screamed in pain again, almost soft, but fortunately Xue Yao held it up.

"Be careful, I think, the mechanism has been activated, everyone should not act rashly, it will not be good if other mechanisms are triggered", Ling Tao reminded him.

After two consecutive lore mechanisms, he no longer dared to underestimate this place, and if he didn't pay attention to it, he would die here.

Click...... Thundered.......

At this time, at the bottom of the cave, the stone wall was shaking, the stone chips fell off, and the originally natural stone wall had a new change, which made Ling Tao and the three of them stunned.

"How the hell is this done"? Chen Gui was stunned and muttered to himself, hiding the real thing under the truth, but people couldn't find any clues, it was hell.

"Look, there are pictures and words," Xue Yao ......exclaimed, pointing to the stone wall that had stopped falling off. (To be continued......)