Rex, who had been waiting for a long time, held out two fingers, first to the top of his head, then to the depths of the water hole.

Sinbadi made a clear gesture.

The former nodded, turned and walked towards the cave.

He looked up at the gas tube suspended above the other person's head - the three-day underwater walk was not only familiar with the basic operation of the diving suit, but also the process of learning sign language and diving details. Among them, it is important to observe the condition of the two tracheas at any time, which is one of the reasons why the salvage requires the cooperation of two people.

As a channel to maintain breathing, the other end of the leather tube is connected to an air pump driven by a steam engine, which fills in and draws out at the same time, so that the air in the helmet is always unblocked. Whenever a tube breaks or becomes clogged, the consequences are devastating. Therefore, it is important to pay special attention when navigating difficult terrain and changing direction.

Seeing that there were no obstacles at the top of the cave that could threaten the gas pipe, Sinbadi also took a leap and burrowed into the water hole.

The surge in his ears had subsided a lot, and he could clearly hear the hissing of the valves, as well as his own heartbeat.

After about ten meters, the light became darker and darker, and looking at the blurred back of Rex in front of him, he felt as if he was walking towards the abyss.

At this moment, the ground under his feet suddenly lifted upward, changing from a flat road to a gentle slope.

In less than half an hour, Sinbadi saw the surface of the sea again—it was no longer golden, but as silent as night.

As Rex slowly surfaced, he couldn't help but hold his breath as he saw a huge cave appear in front of the two of them. Most of its silhouette was hidden in darkness, except for a small area of the dome illuminated by the light reflected in the sea, revealing a shimmering blue color.

This water hole turned out to be a passage connecting the inside and outside?

He struggled to climb ashore and was about to take off his helmet when he was stopped by Rex.

The fjord man took out a waterproof oil lamp from his waist bag, lit the wick and watched for a while before taking off his helmet and "whew...... It doesn't seem like it's a dead place. ”

"Yes...... Wind?" Sinbadi felt a chill on his cheeks as he lifted his hood.

"Well, there's probably another exit from the cave. Rex excitedly said, "That way, there's a little more chance of finding a treasure here—we're really lucky." ”

Sinbadi wasn't so interested in finding anything good, he was more concerned about the safety of the cave. I didn't expect a hollow terrain to form under the desert, which is simply beyond common sense. They would not dive to a depth of more than twenty meters, and even if there were rock formations, they would certainly not be too thick, and how would the loose sand support a large cave? Will the dome collapse?

After going out, it would be better to report this discovery to the people of Gray Castle, Sinbadi thought to himself, although he was a little sorry for the Strange Things Society, but this place was not far from Daqing Port, and he didn't want any accidents to happen.

"The wind seems to be coming from that direction," Rex said, placing his helmet on the edge of the waterhole and holding up the oil lamp, "Let's go over and have a look." ”

Sinbadi had no choice but to pull out his waist knife and slowly followed.

However, as he explored, he only felt that the cave became more and more strange.

It didn't take long for the rocks beneath your feet to turn into soft soil, and then clusters of green grass replaced the slippery moss, as if this was not an underground, but an oasis in Yinchuan.

"It's amazing how leafy plants grow here," Rex exclaimed, "I thought there were only mushrooms and mosses in the lightless underground." ”

"Or ...... Let's go back first," Sinbadi hesitated, "I always feel like this is—"

Halfway through speaking, he was stunned.

"What do you think is going on here?" Rex couldn't help but look behind him after not hearing back for a long time, "Hmm? What are you looking at...... A flower?"

Sinbadi only felt his breath a little shorter, and at his feet was a beautiful little flower, the petals were lilac, and the leaves were almost as thin as cicada wings, as if they would shatter at the slightest pinch. "It's ...... God makes ...... flower"

"Rare?"

"No...... It used to be everywhere. "I haven't seen it with my own eyes, but in the legend of the messenger of the three gods, this flower is found all over the coast, like a purple ribbon, and it is also the most gorgeous sea of flowers in the far south. ”

"In the desert...... Is there a sea of flowers?" said Rex.

"Legend has it that a long time ago this was not a desert, but as full of trees, grasslands and rivers as the north. He shook his head, "But with the departure of the messenger of the three gods, the earth gradually turned into the current form. But that's not what I'm trying to say - the gods make the flower have a very detailed account in the legend, once it takes root, it can no longer be moved, which is why there is no sea of flowers in the oasis. It should have been extinc......t long ago."

"So there's still such a thing. The fjord man smacked his lips, "Perhaps it is precisely because the desertification has not affected the underground cavity that the god flower that happens to be rooted here has survived." ”

Is that really the case...... The strange feeling in Sinbadi's heart became stronger and stronger, and for some reason, walking in this dim world, he had the feeling of walking on an oasis.

And the purple flowers around it are gradually becoming denser, and it is not at all like they have grown underground by chance.

Just as he was hesitating whether to continue moving forward, there was a sudden "click" sound under his feet.

Then a soft light burst out of the earth, illuminating a radius of several meters.

"What's the situation?" Rex asked in surprise.

"I ...... I felt like I had stepped on something," Simbadi swallowed, "and it looked like a plank." ”

"Is it a trap?" he quickly leaned down and stroked the flowers and plants at his feet with his hand, "It's—ha, haha...... Hahaha......"

Hearing this echo of laughter in the hole, Sinbadi felt his hair stand on end, "What's so funny, hey, tell me what the hell is that!"

"Hahaha, it's a treasure! We've found it!" Rex said excitedly, "Look!"

When he brushed away all the dirt, Sinbadi was surprised to see that the light came from what was beneath his feet—a half-buried "stone tablet" with countless lines spread on it, dense as if it were fingerprints. The light shot out from the center of his feet, reflecting the stele like white jade. However, although it looks hard, it feels like rotten wood, and it will sink a little with a little force, which is completely beyond the scope of common sense.

What's even more incredible is that once you move your foot away, the surface of the monument will gradually return to its original state, and at the same time, the light will also dissipate, as if everything you have just seen is an illusion.

"Is there a more amazing treasure than this!" Rex said happily as he stepped on the "stone tablet" repeatedly, "If I can dedicate this to the King of Grey Keep, the title of Honorary Explorer will definitely be mine!"

"But...... It's too big, too," Simbadi said, judging from the small piece exposed, the whole of the "stone stele" was probably larger than the two of them combined, and it was not easy to move out of the water hole.

"The way is what people think, as long as you use more brains, you will definitely find a way. Or we can go find another exit from the cave—huh?" Rex stopped suddenly, "There seems to be another piece there." ”

Sinbadi followed his gaze a few steps forward, and sure enough, he stepped on the same "stone tablet" again. With the light it emitted, more gray-white silhouettes appeared in the sea of flowers.

"There is this, there is also that......" The two walked dozens of meters along the stone monuments, and at first silently counted the numbers, but soon dispelled this idea.

In a short distance, the flower of the gods has been covered with more and more stone tablets, and wherever they land, there will be a light that will shine.

Until a huge wall stood in front of the two of them.

"Oh my God......" Rex gasped.

Sinbadi also felt a chill, and he slowly raised his head—the outline of the stone wall was revealed little by little in the soft light. They found that it was not a "wall", but a hill formed by countless monuments piled together.

Some of them are incomplete, some are broken into several pieces, but most of them are shaped like a square cuboid, and it is not an exaggeration to say that they are monuments. But when they were all together, it gave Sinbadi a different feeling.

- The "coffin" that was buried.