Xue Jian and Concubine Yue walked over cautiously and looked towards the entrance of the cave, and when they looked closely, the cave was still pitch black, and they couldn't see anything.

He threw the night pearl in his hand into it, and with a flash of light, he was soon drowned in darkness and could not see anything.

After a few moments, suddenly they heard a thud, as if something had fallen to the ground.

The voice wasn't too far away, not coming from inside the cave, but from behind them.

The two of them immediately turned to look, only to see that more than a hundred meters behind them, there was a night pearl rolling on the ground.

Xue Jian and Concubine Yue glanced at each other, and immediately walked over to pick up the night pearl.

"It's ...... The bead I just threw into the hole. ”

Xue Jian opened his mouth in shock.

Fei Yuedai frowned slightly and asked.

"Are you sure?"

Xue Jian nodded, his expression was very sure, he looked up and jumped up.

It's obviously the night pearl that was thrown into the hole, why did it fall here, this fact is too weird.

Fei Yue watched Xue Jian fly upward, the light above was dim, and she couldn't see clearly, and after waiting for a while, Xue Jian didn't come down, and she couldn't help but call out.

After a while, Xue Jian's voice sounded, but it didn't come from above, but from the mouth of the cave.

Fei Yue was shocked in her heart, and immediately came to the edge of the cave, only to see Xue Jian flying out of the dark cave.

"What the hell is going on?"

Fei Yue asked with a look of disbelief.

Xue Jian pointed to it and explained.

"There is also a hole at the top of the hall, and it is connected to this hole. ”

Fei Yue said in disbelief.

"How is this possible?"

Xue Jian knew that she wouldn't believe it, in fact, if he hadn't gone there in person, he would have found it difficult to believe this fact.

Xue Jian grabbed Fei Yue's wrist and jumped into the dark hole with her.

It was pitch black and they couldn't see anything, the two of them just kept falling, and a moment later, when they saw a faint light, they had already fallen out of another hole.

The two of them landed firmly on the ground, where the pearl had fallen that night.

This hall is really weird, it is like a closed magic box, the hole on the ground of the hall and the hole at the top of the hall are actually interconnected.

Xue Jianlu pondered and guessed.

"Maybe this is the formation laid out by the person who built the underground palace. ”

Fei Yue was puzzled and frowned.

"Then what's the point of this hole, could it be that it was deliberately left to play tricks on us?"

Xue Jian thought about it carefully, and the upper and lower holes were interconnected, and there were no traps or mechanisms, which seemed a little meaningless.

But a meaningless hole, why did the builder go to such great lengths to arrange it so cleverly?

Xue Jian closed his eyes and pondered, there was no movement for a long time, and I don't know how long it took, Fei Yue suddenly let out a suspicious voice.

"Look, the position of the cave seems to have changed. ”

Xue Jian suddenly opened his eyes, looked down, and saw that the entrance of the cave, which was originally less than three meters away from him, had actually shifted forward by about one meter.

A flash of inspiration flashed in his mind, and he immediately flew into the air to look for the hole at the top of the temple, and when he saw that the hole at the top of the temple was also out of position, all the mysteries suddenly opened up in his mind.

"I see!"

Xue Jian immediately returned to Concubine Yue and slowly said what he was thinking.

The upper and lower openings are not meaningless, but the entrance and exit.

It's just that the two openings are not in the right place, and once they are in the right position, the real entrance and exit will be revealed.

The reason why they were here as soon as they entered, and Sen Hu and the others were on the upper floor, was precisely because when they came in, the position of the entrance to the cave was right.

The two openings are constantly changing positions, like a dynamic combination lock, and only when the dynamic code is correct will the lock be opened and they can leave the place.

Originally, this underground palace was covered with dark jade, absorbing most of the light, making it difficult for those trapped here to find the entrance to the cave, let alone find the movement of the upper and lower holes.

In this way, the people who are accidentally trapped in this underground palace can only wait for death, and it is almost impossible to escape.

Thanks to Xue Jian's system, he pried away all the dark jade in the dungeon, so that the light in the dungeon was restored, and it was no longer a dark scene.

Thinking of this, Xue Jian had to admire the ingenious methods of the builder of this underground palace, one link at a time, it could make people desperate and wait for death in the dark.

After Fei Yue listened, her beautiful eyes flashed.

Not only was she amazed at the methods of the builder of this underground palace, but she was even more shocked that Xue Jian's mind was flexible and quick-witted, and he was able to deduce so many things with a little clue.

Should such a terrible person be killed?

Concubine Yue's mind is complicated, and she is still full of hatred for Xue Jian, which is something that she can't erase from her memory.

If it weren't for Xue Jian's own heavy blow to the Witch King, which made Concubine Yue's opinion of him change, the two would definitely not live so peacefully at this moment.

"Let's wait and see. ”

Xue Jian hadn't noticed that Fei Yue had already had a trace of murderous intent towards her, and said calmly.

The confined space, as time passed, the sound of fighting above gradually faded away, and the surroundings seemed more and more silent, so silent that both of them could hear each other's breathing.

Xue Jian suddenly turned his head to look, and he found that Fei Yue had been staring at him all along, and her eyes were obscure.

"You haven't regained your memory yet?"

Before Fei Yue dealt with the Witch King with him and Princess Qinglian, Xue Jian mistakenly thought that Fei Yue had recovered her memory, and at this moment, she didn't seem to remember anything.

Her eyes were still full of hatred and indifference, but when she looked at Xue Jian, there were more complex and incomprehensible emotions.

"All I remember is hatred. ”

Fei Yue said coldly.

Xue Jian took off the mask on his face, revealed his true face, and said.

"I'm not Helian Chong, and I'm not your enemy. ”

Fei Yue sneered and didn't reply.

She didn't believe Xue Jian's words at all, no matter who this person was or what his identity was.

Xue Jian continued.

"On the castle tower, you should have seen me use the Haizun Ding, do you know why I can use the Haizun Ding? Because the secret of casting spells was taught to me, but unfortunately you forgot. ”

Concubine Yue's heart was shocked, and she remembered this, she just lost her memory, but she was not stupid.

She reached out and stroked the blue mark on her eyebrows, her heart becoming more complicated.

Is it true that he is not my enemy?

Fei Yue felt a little headache, turned around and walked to the side, her mind in a mess.

Xue Jian didn't bother her, but looked at the hole in the ground, concentrating.

He found that the entrance of the cave would move about a meter or so every half hour.

At this rate, it will take at least several days for the upper and lower holes to be aligned.

Xue Jian sat down cross-legged on the spot, swallowed a big pill, and began to recover from his injuries.