Everyone looked up, and saw a huge eyeball sculpture right above, as if an eye was staring down, which was creepy.

But soon, everyone's attention returned to the jade eyeballs.

"Hey, look, there is a heptagonal groove on it. Fatty, I remember that your jade pendant is in this shape, right?" Chu Xuan turned to look at Wang Kaixuan and asked.

Wang Kaixuan took off the jade pendant and handed it over. Chu Xuan took off the red string, put the jade pendant into the groove, and it fit perfectly.

At the next moment, Yushi's eyeballs suddenly tilted back, and there was a sound under the stone pillar.

"Now I'm sure, this stone pillar should be the mechanism that controls the entrance of the underground palace. Fatty, your jade pendant is the key to activate the mechanism. If there is no you this time, we will have to find another entrance." Chu Xuan laughed.

Fatty immediately became complacent when he heard the words, winked at Shirley Yang and said, "Miss Yang, how are you doing, are you glad you let me come with you?"

Shirley Yang said with some dumbfounding: "Yes, it's a good thing I let you come with me."

"Old Hu, look at the arrangement of these stone pillars, is it a giant gate formation?" Chu Xuan asked.

After Hu Bayi examined it carefully, he immediately agreed: "It is indeed a giant gate formation. Professor Chen, you stand back, and Lao Chu and I will activate the mechanism and open the entrance to the underground palace."

"Okay, you must be careful." Professor Chen warned.

After Professor Chen and the others retreated, Chu Xuan and Hu Bayi came to the side of the stone pillar.

Unexpectedly, at this moment, with the slightest breath, a black snake came out from under Yushi's eyeballs.

Chu Xuan raised his hand and a sword qi shot out, directly blasting the black snake's head.

Before he could breathe a sigh of relief, another strange noise came from above his head.

Shining the flashlight upwards, I saw that the eyeball sculpture I saw before was actually moving.

"Old Hu, let's go, it's a snake ball!" Chu Xuan shouted immediately, backing away quickly.

Hu Bayi's expression also changed, and he ran away.

Just after the two ran for more than ten meters, a snake ball fell and exploded, turning into hundreds of black snakes, making one's scalp tingle.

"Everyone, turn around and close your eyes, don't open them even if I don't tell you!" Chu Xuan shouted.

Professor Chen and the others quickly turned around and closed their eyes.

Chu Xuan took out the flash, unplugged the safety catch and threw it backwards.

boom!

Even with your eyes closed, you can feel the intense light produced by the explosion of the flash.

The strong light is the nemesis of the black snakes. The strong light produced at the moment of the explosion of the flash bomb directly wiped out these black snakes.

Chu Xuan opened his eyes, and after confirming that there was no danger, he said, "Okay, you can open your eyes now."

Everyone opened their eyes and turned around, only to see the twisted corpses of black snakes all over the ground, and they gasped.

"Professor Chen, you stay here, Lao Hu and I will open the entrance of the underground palace." Chu Xuan said to Professor Chen.

Back to the stone pillar, the two turned the stone pillar according to the cracking of the giant gate formation.

Just after the last turn, the ground on the fifth floor collapsed suddenly, revealing the passage of stone steps leading underground.

"There is no danger, Shirley, Professor Chen, you can come over now." Chu Xuan greeted.

Shirley Yang and the others couldn't hold back their curiosity for a long time, and walked over quickly after hearing this.

Seeing the entrance of the black hole, Professor Chen said happily: "Xiao Hu, Xiao Chu, you two have made great contributions to our expedition to the Western Regions."

"Where, where, it should be." Hu Bayi said modestly.

"Brother Hu, Brother Chu, how do you know about this mechanism? I feel so amazing." Sa Dipeng asked.

"This is similar to mathematical theorems and formulas. For example, the opening method corresponding to the giant gate formation is like the sum of rectangles. As long as you see the sum of rectangles, you can immediately think of the length multiplied by the width. And we saw the giant If you use the door array, you will know how to open it."

"So that's how it is." Sa Dipeng suddenly realized.

Not only Sa Dipeng, but even Professor Chen and the others did not expect that Chu Xuan could explain the original mysterious formation so easily and easily.

Everyone enters the passage.

There are exquisite reliefs on the walls of the passage, which amazed Professor Chen and the others.

Through the long passage, an underground river appeared in everyone's field of vision.

After confirming that there was no danger, everyone cheered and rushed over, drinking water with their hands in their hands.

Along the way, everyone is saving water.

Even so, when we came to Jingjue Ancient City, there was not much water left.

And whoever was left was left to An Liman who was on top.

At this time, it is really a blessing to be able to drink the clear and cool underground river water.

The fat man even sang happily.

"Old Chu, let's go to the front to find out." Hu Ba said to Chu Xuan after the same drink.

Chu Xuan nodded, and the two explored upstream.

Soon, the stone gate opened on the other side of the river appeared under the beam of the flashlight.

"The stone gate was stuck with stones and couldn't fall down, and the hidden bridge in the river was also raised. But the entrance we came in couldn't be opened unless there was a fat man's jade pendant, so there must be other entrances." After Chu Xuan observed road.

"Indeed."

"Old Hu, you go back and tell Professor Chen and the others about the situation here. I will continue to explore upstream to see if I can find another entrance and find another way out for us."

"Okay, then be careful." Hu Bayi felt that Chu Xuan was really a reliable and trustworthy friend.

After Chu Xuan continued to explore upstream for a certain distance, he found another passage.

At the end of the passage, a stone gate stood in front of him.

There should be a mechanism to open the stone gate inside.

After Chu Xuan searched carefully, he soon found a stone brick with a different shape on the wall next to the stone gate.

Chu Xuan tried to press the stone brick, and the stone brick was immediately pushed into the wall.

With a burst of sound in the wall, the stone door gradually rose.

Chu Xuan walked through the stone gate without hesitation and came to the other side.

It is a spiral upward stone step road.

Chu Xuan climbed up the steps and came to the end of the stone step road, and there was another stone gate.

As usual, find the organ button to open the stone door.

When he came outside, Chu Xuan scanned it with a flashlight, and was immediately pleasantly surprised.

This turned out to be the interior of a palace!

Although a large amount of sand poured into the palace, the remaining space is still extremely spacious, which shows how tall the palace is.

This should be the royal palace of Queen Jingjue.

The only light is a small window at the top of the wall.

Chu Xuan also saw the unusable rope ladder.

Performing lightness kung fu, he flew to the small window and got out, and there was a temple not far outside.

Return to the underground river from the entrance of the temple.

"Old Chu, you're finally back, so you're worried about us." Wang Kaixuan breathed a sigh of relief when he saw that Chu Xuan had returned safely.

But Hu Bayi was pleasantly surprised: "Old Chu, you came in from here, did you really find another passage?"

"I found it. The entrance to the passage is on the stone pillar of the Jingjue Queen's Palace. There is no danger along the way."

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