The five of them successfully reached the bottom of the round pit, only to see that there were some sand and stones all around, and only a stone door stood on the left.

Wuyu walked over and said, "Let's take a look, how can this stone door be opened?"

The five of them tried to push the stone door open with all their strength, but after pushing for a while, the stone door did not change at all, and it was estimated to weigh a thousand catties.

Liu Ruoxing patted the dirt on his hands, pushed the four of them away, and said, "Let me try it, since there is this stone door, there must be an opening mechanism nearby." ”

"That's right," Sima Yang patted his head and continued: "Lao Liu, you are a specialized research institution, what are we doing just now, you can get it!"

After the four of them made room for Liu Ruoxing, Liu Ruoxing carefully observed the structure of the stone gate.

A few minutes later, Liu Ruoxing was pointing at the stone gate and drawing something, while chanting the gossip formula: Gen Covered Bowl Northeast Qi Mountain, Gen Covered Bowl Northeast Qi Mountain......

Liu Ruoxing suddenly clapped his hands and shouted, "There you have it!"

The four of them came around, and Liu Ruoxing continued: "You guys come and see." Saying that, Liu Ruoxing used a flashlight to shine on a place in the northeast of the stone gate, which was indeed different from the rest of the stone gate, and it seemed to be carved with stone with obvious three horizontals.

Mu Chen asked, "What are these three horizontals?"

"Look at these three horizontals, the top one is carved very hard, and the imprint is very deep, which is solid, while the lower two horizontal imprints are shallow, and they are false. Coupled with the northeast of the Flame Mountain where we are now, these three traces are also to the northeast of Shimen, representing the mountain. So, this is the Gen hexagram in the gossip. Liu Yixing looked at the four of them and continued: "The northeast Qi Mountain of the Gen Bowl is seven, I think this method of opening is related to the number seven. ”

Seven, although the hexagram on the door is unlocked, how will the final result be unlocked? This stone door still cannot be opened!

After a while, seeing that no one else had any ideas, Wu Yu said tentatively, "Why don't we try knocking on the door seven times?"

Anyway, it's a way, the other four nodded, let's give it a try.

Wuyu walked to the stone door and knocked seven times on the middle, but there was no response.

Seeing this, he said: "Is it in the wrong direction, Wuyu, you can knock in a different position." ”

Wuyu changed positions again, and the result was the same. But everyone couldn't think of any way, so they could only knock seven times and seven times on the stone gate where they could go, and it was useless.

After trying for too long, everyone was tired. Sima Yang was already a little impatient, pacing back and forth in front of the stone gate, "It's useless to try so many times, Ruoxing, are you mistaken!

After Sima Yang finished speaking, he jumped seven times, originally just by accident, but after jumping seven times, the stone gate began to make a sound.

Mu Chen and the others were attracted by this voice, and their faces showed joy.

"I really didn't expect to be opened by mistake by your kid!"

After a few seconds, the stone door slowly ascended, revealing the space inside.

A strong light illuminated the entire space, and everyone walked in, instantly stunned by the scene inside.

There is really a hole inside the stone gate, the outside is pitch black, but the inside is the lamp wall is brilliant. Continuing inside, the sandstone walls have been carefully carved into marble, and each wall has a candle flame at short distances, which seems to have been here for a long time, but why not extinguish it?

Mu Chen informed the other four of his doubts, and Wu Yu replied: "This is not an ordinary candle, this is an everlasting lamp, and what burns is the oil inside, this oil is refined from the body of the Beihai mermaid, and it can be extinguished forever." ”

"Yes," he continued, "I didn't expect this thing to exist now, and the person who designed this cave must be absolutely unusual." ”

The passage through this stone gate was very long, and several people walked and watched for a while, but there was no end in sight.

At this time, Liu Ruoxing, who was walking in front, stopped, looked at the wall next to him and said, "Have you noticed it, the painting on this wall seems to tell a story." ”

When the four of them heard this, they walked next to Liu Ruoxing.

"Look, it doesn't look like a dragon, is this a person?"

"This ...... Could it be?" Wu Yu looked carefully at the carving on the wall, and ran back a few steps to observe the wall carving in front of him, as if he already knew something. "This should have something to do with a local legend in the Flaming Mountain......"

Regarding the legend of the Flaming Mountain, basically everyone is familiar with the story of the four masters and apprentices who crossed the Flaming Mountain to borrow a banana fan in the Journey to the West, but there is another story that circulates locally.

When the Ziwu Continent was still called Xinjiang, there was a local folklore.

A long time ago, there was an evil dragon in the depths of the Tianshan Mountains, this evil dragon did all kinds of evil, destroying crops, destroying houses, the villagers thought of a lot of ways, every year they killed some livestock to sacrifice to the evil dragon, but the evil dragon was not satisfied, often caught local boys and girls to eat, provoked the people to make a living.

Therefore, in order to eliminate the harm to the people, the supreme ruler of the region, Shatok Bukhara Khan, sent Hala and Zhuo to subdue the evil dragon. After a thrilling battle, the dragon walked west with his wounds, and the blood stained the entire mountain. Eventually, the dragon was killed by Hala and Zhuo at the Qijiaojing in northeast Turpan. For this reason, the Uyghurs called this mountain the Red Mountain, which is what we now call the Flaming Mountain.

"So that means that this cave is likely to be the place where the evil dragon was slain, or the mausoleum of Hala and Zhuo?" Mu Chen listened to Wuyu's narration, his expression was a little solemn, what does this matter have to do with the Heavenly Immortal Sword?

With questions, Mu Chen followed the four of them for a while and came to a high stone staircase. From a rough point of view, there are about a hundred steps on this stone staircase, and there is a jade coffin on the top.

Wu Yu looked at the sarcophagus and sighed: "It seems that the legend is true, this sarcophagus should be the dragon slaying heroes Hala and Zhuo." ”

Mu Chen and the others also agreed with Wuyu's idea, and quickened their pace and walked towards the sarcophagus. Because after all, it has been determined that this is a tomb, so there must be a mechanism. Among the five, Liu Ruoxing was proficient in the art of organs, so he walked in the forefront. But all the way up did not trigger any mechanism, Liu Ruoxing stood at the top with a face full of doubts.

The surface of the jade coffin is transparent, so you can clearly see the inside. Everyone held their breath and looked nervously inside, and what was shocking was that except for some scattered jewels, the owner of the tomb was nowhere to be seen.

What's going on? Could this be an empty coffin?

Just when everyone was puzzled, Mu Chen accidentally found a pool of blood on the steps on the right side that everyone had not walked over just now: "Look, there are blood stains here! Isn't the person in this coffin dead?" Mu Chen squatted down and touched the dried blood with his hand, which definitely means that this is human blood.

There are more and more mysteries in front of them, and Mu Chen and the others' faces are getting heavier and heavier, they don't know what they are about to face, but everyone can feel that what they are about to face is definitely not a good thing.