The sound of the fight did not sound far away, but they followed the sound and searched for a long time, but they could not find the source of the sound.

Listen carefully, it is clear that the sound is nearby, and after walking a few steps, you can clearly feel that you are getting closer and closer to the voice, but you can't see a person.

It was as if they were separated from the people who were fighting by an invisible wall, and they were inside the wall, and they could only hear the sound outside the wall, but could not see the people outside the wall.

Xue Jian and Fei Yue stood still, listening carefully to the sound of the fight, as if it was a melee of a group of people.

Suddenly, Xue Jian's eyes lit up, and he heard the voices of Senhu and Du Xiaoqing talking.

"It's Senhu and Xiaoqing, they both came in. ”

There was silence here, and the sound of the fight was extremely loud, but he still couldn't hear what Sen Hu and Du Xiaoqing said.

Fei Yue said suddenly.

"You try to shout at them and see if they can hear us. ”

Xue Jian pondered for a moment and nodded.

If there was anything dangerous in this hall, it probably wouldn't have appeared by now.

He shouted.

"Brother Senhu...... Xiaoqing, can you hear me?"

"Can you hear me?

Can you hear me?

Is it there?"

The sound echoed, echoing through the silent and dark hall.

Xue Jian and Concubine Yue waited for a while, and he shouted a few more times, but he only heard an echo, and did not hear Senhu and Du Xiaoqing's reply.

It seems that this place is completely isolated, not only can the air not circulate, but even the sound cannot be heard.

It's strange that the sound from outside can come in, which is a bit unreasonable.

Xue Jian felt more and more that this place was extremely strange, with dark jade everywhere, plus the war murals that could make people lose their minds on the walls, and endless poisonous gases.

What the hell is this place?

Xue Jian pondered for a moment, looked up, and said.

"You wait here, I'll go up there and take a look. ”

After Concubine Yue nodded, Xue saw Ling Yun unfold and slowly fly towards the sky.

It was also pitch black above, and nothing could be seen, and Xue Jian didn't know how high this hall was, so he felt that he had almost flown twenty or thirty meters before touching the top.

The top of the main hall is the same as the ground, and it is also inlaid with a layer of dark jade, which is as smooth as a mirror.

Xue Jian brought the Night Pearl to the top of his head and looked up carefully.

At this glance, his expression suddenly changed, and with the faint reflection of the dark jade, he not only saw his own reflection, but also saw the figure on the other side of the dark jade.

These figures were extremely blurry and could not be seen clearly, and they trampled on the dark jade and ran back and forth, and the fight was extremely fierce.

"It turns out they're all on the upper floor. ”

Xue Jian suddenly understood, reached out and touched the dark jade, and used the system to recover it.

After it was recovered, there was still a layer of stone wall on the top of the hall to isolate it, and Xue Jian punched the stone wall hard, but he couldn't shake it in the slightest.

He frowned, fell a few meters down, condensed the power of the True Yuan of his body, and unleashed his strongest punch.

This fist is called the Three Desolations and Nine Transformation Fists, and it is a top-level martial art of the earth level, and Xue Jian purchased it from the system after reaching the True Yuan Realm, and the cultivation difficulty is extremely high.

The minimum cultivation threshold was also the True Yuan Realm, and it took him almost more than two months to barely cultivate the first change, the wind change.

It was this punch that Xue Jian used before to seriously injure the Witch King.

This is the most powerful killer martial art he has cultivated so far, and this time, he has only used it twice.

The huge True Yuan Cyclone condensed in the heart of his fist, and in an instant, the True Yuan Cyclone was already the size of a grinding disk.

This is not the limit, but Xue Jian did not accumulate any more strength and punched it.

A fist the size of a millstone appeared, bombarding the stone wall at the top of the main hall.

A loud bang rang out, and Xue Jian's eyes froze, and the stone wall didn't even tremble, let alone be broken.

"What's going on?"

Concubine Yue's voice immediately came from below, and Xue Jian shook his head, giving up the idea of blasting the stone wall open.

From the frescoes, it can be seen that this underground palace was built very old, and the floor and ceiling are all rare dark jade.

With this kind of generosity, the stone wall of the underground palace must not be an ordinary stone.

He slowly fell to the ground and recounted the above in detail.

Fei Yue was puzzled.

"How can this be, we should all have come in through a door, why are they on the upper floor, and we are on the lower floor of the underground palace. ”

Xue Jian was also puzzled, but at least from the current point of view, the upper layer was relatively safe, and there was not even poison gas, otherwise they would not have the heart to fight each other.

"Let's go, look elsewhere, there's an entrance, there's an exit. ”

The two walked all the way along the wall, and after walking for about half an hour, they found that they were back to the starting point.

In addition to the murals on the wall, there was no suspected exit, and Xue Jian and Feiyue couldn't help but sink their hearts.

This turned out to be a completely enclosed underground palace.

After a moment of silence, Xue Jian muttered.

"There will never be no exit, there must be a mechanism.

The dark jades absorb most of the light, making it impossible for us to see in the distance, perhaps on the part of the builder on purpose, to hide the exit in the darkness so that those who fall into it can't find it. ”

Fei Yue heard it in a fog and asked suspiciously.

"What are you talking about?

Xue Jian didn't explain, just asked her to wait in place for a while, and then Xue Jian stepped into the darkness alone and began to frantically retrieve the dark jade that was spread on the ground.

He is very fast, extremely skilled, used to be an official in the Imperial City of Dayu, and practiced this speed when he copied other people's homes.

In just a quarter of an hour, Xue Jian recovered the entire hall on the ground and the dark jade embedded in the roof of the hall into the system.

A piece of dark jade was recycled at a price of 10,000 virtual coins, and this time he recovered more than 2,000 yuan, and by mistake picked up more than 20 million virtual coins, so cool that he took off.

And as the pieces of dark jade disappeared one by one, the light around them gradually brightened.

Concubine Yue hadn't noticed it at first, but after Xue Jian pried it halfway, she obviously felt that her line of sight was farther away.

That's when she found out what Xue Jian was doing.

He was actually running close to the ground, half-crouching on the ground in a strange position, touching the floor with both hands, running as fast as a running duck.

Fei Yue blinked, looking at him with a strange expression, full of doubts in her heart.

When there is no dark jade in this underground palace, the light of the night pearls is extremely bright, illuminating the surroundings as if it were day.

The two of them looked at it, and this underground palace was extremely wide, as big as several squares, with a length and width of more than three or four thousand meters.

The ground around was littered with all sorts of dry corpses, both human and ferocious.

I don't know if these people and fierce beasts died in the underground palace in the first place, or if they were like them, they accidentally fell here and died trapped here.

At this moment, Fei Yue raised her hand and pointed to an area in the center of the underground palace and spoke.

"Look there, there's a hole. ”

Xue Jian immediately cast his gaze, and in the center of the underground palace, he saw a square hole about two meters wide.

It was dark and secluded, and it was impossible to see what was inside.