"I already have a clue......"

As he spoke, Wei Zede paced up in a courtyard to the left of the corridor, and soon he spotted an anomaly on a two-meter-square stone brick.

"The bottom of this brick is empty!"

Wei Zede beckoned to Li Daoyi: "Daoist, come here and help!" ”

The two of them tried for a long time, and finally they rotated a column facing the "floor tiles" in a clockwise direction.

I only heard a "clatter" sound, and the stone bricks on the ground caved in, revealing a bottomless tunnel.

"Authentic again? I hate drilling! ”

Li Daoyi looked at the swarthy tunnel entrance and muttered a few words unhappily.

It seems that the previous exploration in the underground space has left a deep impression on Li Daoyi's heart.

Seeing this secret passage, Wei Zede's heart was relieved, which meant that there was no mistake in his judgment.

After a brief greeting with everyone, Wei Zede suggested that everyone pack up first and go in after being fully prepared.

They ate water and dry food.

During this period, Liu Ru curiously asked Wei Zede how he found the secret passage?

"When we surveyed the palace, it was about 700 meters in the north-south direction and more than 200 meters in the east-west direction. However, in the middle corridor, there is a distance of about 5 meters! That's the problem......"

"Next, if you explore carefully, you will be able to discover the entrance to the secret passage."

Although this is easy to say, it is quite difficult to do, and most people will not be able to detect this short error of a few meters without a clear map or a lot of experience.

After a short rest, everyone led the secret passage in the palace under the leadership of Wei Zede.

On the side of the entrance, Weizel found a lever made of stone, which could be used to open the tile with the help of a mechanism.

It's amazing how these mechanisms are still functional, despite more than a thousand years of elapse.

Fearing that there would be other mechanisms on the way down, the rescue team walked slowly at a very slow pace until they reached the end of the stone steps......

Suddenly, a huge corridor ten meters wide and five meters high appeared in everyone's field of vision.

In this section of the corridor, the building is no longer made of blue stones, but is made of thousands of inky stone strips 2 meters long, 0.5 meters wide and 0.3 meters thick, which are painted with all kinds of strange and bright murals.

Perhaps due to the closure, the air in the corridor is not very circulating, which makes the colors of those murals still brilliant without the slightest peeling, and Professor Liu and others are very excited to see it.

Professor Liu explained that the murals discovered this time and the carvings that everyone had seen on the shadow wall before were major discoveries in the Greater Khing'an Mountains in Northeast China, filling the historical gap of the corresponding era.

Although these murals are exaggerated and mythological, they can also shock the whole world!

Wei Zede listened to Professor Liu's excited voice, but his attention was focused on the murals on both sides of the corridor, because he could vaguely feel an eerie atmosphere, and if there was any danger, he might be able to find some clues from these murals.

However, all of the frescoes depict various religious ceremonies and the current construction process of the underground palace.

As they walked, they stopped in front of the last mural, which depicted an unusually large cavern with a slender path that winds down and circles around the cavern.

"This mural is too exaggerated!"

Liu Ru used his finger to compare the proportion between the huge cave and the slender path in the mural, and he said with a smile: "If the painting is a normal proportion, then this big hole must have a radius of thousands of meters!" How can it be? ”

The other ranks were also talking about it, and no one took the information recorded on the mural seriously......

But Weizel had a very different feeling, and since seeing this last mural, he has begun to have heart palpitations......

Gritting his teeth, Wei Zede forcibly suppressed the uneasiness in his heart and led everyone to continue to move forward.

The corridor is not very long, and at the end of it is a sealed stone wall, and on both sides of the stone wall are erected two stone pillars with carved patterns.

Professor Liu looked around and said suspiciously, "...... Is this a dead end? Perhaps, the purpose of the existence of this corridor is only to preserve those murals? ”

The stone wall is extremely smooth, as if it has been polished by hand, and the two stone pillars in front of the stone wall are carved with six statues at the bottom of the columns, and countless complicated patterns are carved on the pillars.

"There it is!"

Wei Zede thought for a long time, and his heart moved.

"These two pillars are exactly the same shape as the one I encountered before, but they are several times smaller...... According to the principle of yin and yang, it is only necessary to rotate these two stone pillars in a counterclockwise direction at the same time! ”

Wei Zede still beckoned Li Daoyi to help, and the two of them rotated the two stone pillars at the same time very tacitly, and when a sound sounded, the smooth stone wall in front of everyone opened in response.

This time, it was Li Daoyi who took the lead, and the rest of the mermaids entered.

When everyone came to the outside of the stone wall, they used the "wolf's eye" flashlight to search.

It's an underground building, but it's a huge space! The vertical distance between the ceiling and the ground overhead is almost ten stories high......

Rows and rows of majestic stone pillars support this vast hall.

"It's ...... The dungeon on the frescoes? ”

Everyone immediately remembered the mural they had seen in the corridor.

“…… It seems that the pattern on the mural is not exaggerated at all......"

Liu Ru raised her head and said as she looked up at the dome that glowed with a faint blue light.

In order to see carefully, everyone turned on all the lighting equipment they had brought with them, and saw that the hall of the underground palace was covered with jade floors, and some jade products, pottery, bronzes, bone tools and other items were scattered in the corners.

And the most striking thing is that along both sides of the central axis of the hall, stands a neatly arranged line of stone figurines.

After a closer examination, everyone came to a mixed conclusion.

Worryingly, the items left in the underground palace were extremely damaged by air erosion; Happily, since there is flowing air in the dungeon, it means that there must be other passages connected ahead, and maybe the "seal" is really hidden here.

Just when Wei Zede and the others were discussing what to do next, the stone figurines lined up actually made a "click" sound and moved!