"I'll see." Su Yu rummaged through the last box containing the specially marked items, and then turned out a few boxes with workmanship skills inside.

Compared with other treasures, although these boxes are also inlaid with luxurious gems and crystals, they always feel flashy, and they are a useless thing with only a layer of good-looking skin.

But after fiddling with it for a while, Su Yu quickly dispelled this idea - these boxes are Karakuri boxes!

The so-called Karakuri box is actually an item very similar to the real-world 'Luban lock', the slight difference is that the Karakuri box is covered with parts, and the way to open it is also to make it 'open' by using the characteristics of the parts.

Speaking of parts, you should be able to guess that the Karakuri box is actually an item related to the mechanic, but unfortunately An Jie is not here, otherwise these boxes will be handed over to him, and with his current strength, he will definitely be able to unlock them quickly.

But well...... Even if An Jie is not there, Su Yu can open this Karakuri box.

"You two come over here and smash them." Su Yu took out two hammers from his backpack and handed them to the two with great strength, and then put the Karakuri box on the ground, while he took two steps back.

She just saw it, although she can't solve this Karakuri box, but the design of these Karakuri boxes is relatively ordinary, and if it can't be forcibly cracked, it will be 'burned'.

So even if she brute-forced, she could still get what was inside.

In that case, there's no need to waste time cracking it.

The hands and feet of the smashed things were very sharp, the hammer was lifted and fell, and with the sound of items shattering, several Karakuri boxes were all smashed to pieces, leaving only fragments all over the ground, and what was hidden inside after losing the protection of the Karakuri box.

【Pick up unidentified fragment 1*1】

【Pick up unidentified fragments 3*1】

【Pick up unidentified fragments 4*1】

Su Yu looked at the few pieces that could be picked up on the ground, first picked them all up, and then looked at the information and found that there seemed to be a piece missing.

In the case of one, three, four, it must be one less two.

Of course, there may be more than four fragments, and there may be a fifth or even a sixth, but this is not in the scope of consideration for the time being.

"My lord, I think this fragment is a bit like the stones we placed on the stone gate earlier." There was a person who looked at the things in Su Yu's hand and couldn't help but remind.

Su Yu nodded in agreement: "This should be the fourth stone missing, but it is broken, and there is still one piece missing." ”

It took her a dozen seconds to piece the three pieces back together, the irregular shape almost identical to the groove outside the door, but it was obvious to everyone that part of the thing was missing.

"Everyone is looking everywhere to see if there's anything missing." Su Yu asked everyone to look for the pieces, and he took two people to close the lids of these boxes containing priceless treasures, hung up the locks he had just made, and then stacked them neatly aside.

As for the box of unmarked things, Su Yu was not ready to take it, so he also asked people to lock the box, but the style of the lock looked different, this was to distinguish it.

As for the empty boxes, Su Yu also asked people to close, but the padlock was not necessary, and there was nothing in them anyway.

These boxes are temporarily placed here, and after Su Yu goes out, she will ask Luya to send someone to pick them up...... As she had said before, it was a gift from her to Luya.

A few minutes passed, and someone finally found the last piece of 'Fragment 2' in a gap in a corner.

Su Yu got the four pieces, and the word 'synthesis' immediately appeared on the item, and after the synthesis, the four pieces disappeared, replaced by a whole irregular stone covered with lines, except for the different shapes, the surface looked exactly the same as the three stones found outside.

"Lord Su, we're going out now, right?" Now that they have got the fourth stone, all they have to do now is to find a way to get out of here and put the fourth stone on it...... As for what happens after that, that's for later.

"Everyone took pickaxes and started digging from both sides of the stone gate." Su Yu took out a bunch of pickaxes and arranged for everyone to divide into three teams.

One team was responsible for digging the left side of the stone gate, the other team was responsible for digging the right side of the stone gate, and the rest of the people were resting and vigilant, so that they would not be attacked by a surprise attack after digging out and there was no way to resist.

The reason why they didn't dig out directly from the middle of the stone gate was mainly because they were worried that there would be falling rocks behind, and if there were, then even if they dug through the stone blocked at the stone gate, they still needed to deal with the next one.

And because they dug through, the falling rocks might even roll straight in, and at that point, the space inside them would be squeezed again.

According to this arrangement, they dug all the way out, and when the distance was almost up, Su Yu asked them to dig in the middle, and then hollowed out the middle of the stone blocking the door.

After hollowing out, Su Yu found a gap and put the stone in his hand into the groove, and then it was calm for a minute.

In this minute, nothing happened, and Su Yu just asked everyone to evacuate to the inside of the stone gate first.

Although doing so may result in a 'turtle in an urn', it is better than squeezing outside, without any room for movement, and even room for resistance.

After a calm minute passed, it was Ning Shi who was the first to notice the problem, and Su Yu seemed to understand something the moment she saw Ning Shi's face change.

Because what can make a light mage so nervous must be pollution.

"Everybody, come close to me, don't leave this aperture." Ning Shi didn't care about explaining anything to Su Yu, so he took out his staff and circled a place on the ground for the first time, and then circled all a dozen people inside.

After doing this, she also took the time to put a separate protective shield on each of them, as well as some light-related buffs that could resist pollution to a certain extent.

After Ning Shi finished this series of operations, without saying anything, the others also visibly found themselves surrounded by black mist.

"Long story short, Lord Su, just now I noticed that the pollution concentration here has risen dramatically, and my barrier can only hold for an hour, and if I need to move, it can only last for half an hour."

Su Yu knew that the barrier that Ning Shi was talking about should be the aperture that protected them all in it.

Now not only can you see the gray-black fog outside, but you can also see that these fogs have tried to invade the barrier more than once.