Descending the stairs, they couldn't see the full extent of the 'basement' scene, even with the lighting of torches.

Fearing that the merfolk would find out about their whereabouts, they didn't have time to pay much attention to the situation next to them, so they simply followed the road down after making sure that there was no danger......

"My lord, there's a door here!" After walking for about ten minutes, the two people who walked in front made a sound of surprise.

Although the road was very peaceful, it was precisely because of this unusual calmness that everyone couldn't help but stand on their hairs, and everyone hoped to be able to reach the end sooner, so after hearing 'there is a door', everyone was faintly relieved.

"Don't act rashly, let's light this place up first." Since it has reached the end, Su Yu asked everyone to use props or torches to light up all the surroundings, and after lighting up, the appearance of the stone gate and the surrounding environment can be seen.

It was a large stone gate that was two people tall, and the outline around the stone gate was inlaid with a circle of beautiful ore that could not be seen, but it was clearly not an ordinary stone.

The walls on the left and right sides of the stone gate are full of patterns, and at the same time, the stone walls on the left and right sides are also covered with complex and dense patterns.

Su Yu couldn't see anything on the patterns on both sides of the stone gate, but she saw some problems on the stone walls on the left and right sides...... She always felt that the pattern on the stone wall was a bit like a kind of text.

But it is obviously not an ancient script, because Su Yu knows the ancient script.

And it's not the text of the mermaid clan, because Luya has shown Su Yu the text of the mermaid clan, although she has only read part of it, but it is obviously not the same as this.

After pondering the marks on the wall for a while, but didn't figure out anything, Su Yu was a little regretful, but there was good news that someone saw a hole in this stone door that was suspected to be the key to open the door.

There are four holes in total, corresponding to four different irregular shapes, and it is not surprising that as long as you can find these four shapes and put them on, you should be able to open this stone door.

It's just that the space of this underground staircase is so large, and more than a dozen people are still crowded after standing in three or four rows.

With a small space, even if there is something, they should be able to spot it at a glance...... But they just didn't find anything.

"You two stay and keep watch, and the rest go up with me." Since the thing is not underneath this, it must be on the staircase that comes down the way.

There is nothing here, there is no need to leave too many people, but someone also needs to watch, so Su Yu left two people to take care of each other.

The others followed Su Yu back the same way down the stairs.

Unlike before, they didn't look around carefully at all in order to get down quickly, but now the purpose of their return is to find something, so naturally they have to be very serious.

As they expected, the 'keys' to open the door were indeed scattered around the stairs, and they looked like stones of different shapes and intricate patterns.

The first stone was in a crevice in the ground and was not only difficult to find, but also difficult to remove.

The second stone is 'inlaid' on the right side of the stone wall, blending in with the pattern on the stone wall, and if someone hadn't found that the patterns on the left and right sides of the stone wall were symmetrical, but this one was different, then the key would not have been found.

The third stone block was on the left side of the stone wall, and like the one on the right, it was also fused and inlaid, but they had already found one of them, and it was easier to find the third one.

In less than ten minutes, three of the four irregular stones were found, which made everyone very excited and confident in this trip, but what they didn't expect was how easy the first three stones were to find, and how hidden the fourth stone was.

Twenty minutes had passed since the third stone was found, and they had found nothing.

Later, some people thought that the first three stones were on the ground, one on the right wall, and one on the left side, so could the fourth stone be embedded in the stone wall above their heads?

This idea has been approved by many people, and Su Yu also thinks it is very reasonable, but the experience she has been experiencing has made her feel that things are not so simple.

Sure enough, they looked up all the way, but they couldn't find the last stone that opened the door.

Although it was expected, Su Yu still felt a little regretful in his heart.

"My lord, what do we do now?" After another check to no avail, one couldn't help but ask.

It's not that they don't want to look for it anymore, it's that they all feel that the stone either doesn't exist or isn't here, and in that case, there's no point in wasting time looking for it here.

"Let's go down first and give me all the stones." Su Yu arranged for everyone to return to the gate of the stone gate, and then got three stones and placed them on the stone gate one by one.

Surprisingly, there was a stone missing, but the stone door slowly opened......

The stone door was very heavy, and the sound when it was slowly opened was also very dull, as if a treasure that had been buried for thousands of years was opened......

It's a quaint smell that certainly doesn't smell good, but it's not so bad that you can't cover your mouth and nose.

If it were to be described in more straightforward terms, it would be the dead and indifferent atmosphere of no biological activity for many years, and the choking sensation of dust rising with the wind.

Until the stone door was fully opened, no one spoke up, and no one took action.

The stone gate stopped, and everyone's hearts also stopped, and an inexplicable feeling arose.

They can't see what's inside, but they always feel like there's something they want......

They want to go in, and they want to get in right now......

'Boom-'

A loud movement like a boulder falling to the ground brought everyone back to their senses, and they didn't have time to think about what was happening. I heard someone behind me shouting, "Get in!" There are stones rolling down on it! ”

"Everyone goes in order, don't be in a hurry." Although Su Yu was not standing in the first row, she was also in the forefront, she couldn't see the situation behind her, but she could vaguely hear the movement of something rolling down.

She didn't bother to think about why the stone was rolling all the way down, and she didn't have time to think about whether the stone was set up by the system, or if someone did it on purpose...... The immediate priority is to prevent everyone from entering the stone gate in an orderly manner, lest they be crushed into pulp by the falling stones.