The entrance to the cave looks like an ordinary karst cave in the tourist area, at least on the outside, there is no difference.

The third of the entrance to the cave is also separated by an iron railing, with the entrance on the right and the exit on the left.

The entrance to the cave is not large, and with the iron railing, the space that allows people to walk is much smaller.

Not only that, Du Qian also saw that no matter the adventurers who came in and out, everyone was carrying a huge backpack, and many people's backpacks were more than fifty centimeters higher than their heads.

All of them are very well-behaved, and although the backpack is large, the width is about the same, and it will never exceed the width of my shoulders.

The human body, the backpack, the volume, the width, everything is calculated. The entrance is just big enough for two people to walk side by side, and the exit is only for one person.

In other words, the entrance and exit of this cave can only allow three people to walk side by side at the same time. In calculating the walking speed of each adventurer, the backpack plus the thickness of the human body, thirty lines per minute, the flow of ninety people, is the most economical and stable speed.

Du Qian admired in his heart, the power of the country is really powerful, along the way, he has been surprised many times, even if he has guessed a few points before, but the ability to control the flow of entry and exit in this cave still amazes him.

Everything here is to make the best use of the resources in the cave.

Are the resources in the cave really so important?

Why don't you continue to expand the entrance of the cave? Even if Qian Wuming said before that this is already the limit, Du Qian still doesn't believe it. With the power of the empire, even if the Ageless Peak is removed entirely, it shouldn't be a difficult matter, it's just a small mountain, in the Zhoushan Mountain Range, the Ageless Peak is far from being a strange peak, whether it is the scenery or the height, majestic or something like that, the Ageless Peak is not ranked at all.

"Still guessing, hehe. Qian Wu, who was walking side by side with Du Qian, lightly touched Du Qian with his shoulder, and said with a smile.

"Do you know what I'm guessing?" Du Qian turned his head and glanced at him and said, although this guy is very smart, Du Qian doesn't believe it, he can guess what he thinks in his heart, the legendary thing of mind reading only exists in fantasy, not to mention the Talisman Master, even if it is a mysterious Soul Master, he does not have this ability.

"Of course I know, you are guessing, since the empire has increased the utilization rate of the cave to this extent, why not knock down the Immortal Peak and expand the hole entrance, is it difficult to guess?" Qian Wuming said with a smug smile on the corner of his mouth.

"Awesome, how did you guess that?" Du Qianyi raised his thumb, and the pace under his feet was unhurried, closely following Zhuoya and Qian Wuli in front, maintaining a distance of about half a meter.

"Hey, don't guess, nine out of ten people who are here for the first time think so, and the guys who have the opportunity to enter the cave are all self-righteous people, and they all think they are the smartest, even smarter than everyone in the entire empire. Qian Wuli said coldly.

Du Qian raised his eyebrows, this little woman was quite unfriendly to herself, he didn't remember when he offended him. "You are also a person who has the opportunity to enter the cave, and you are also smart?" Du Qian didn't care about the relationship between her and Qian Wusheng at all, and said with a sneer.

"You're right, I was smart at the beginning. Without thinking about it, Qian Wuli happily admitted it.

"Okay, can you announce the answer?" Du Qian asked.

"It's very simple, the stones around the cave are strange, with our current human abilities, there is no way to take it, slashing and chopping, fire and water immersion, all the methods you can think of are ineffective. This kind of stone is almost all over the entire Immortal Peak, so to speak, more than 95% of the mountains in the Immortal Peak are composed of this kind of stone, how did you get the name Immortal Peak, did you take it indiscriminately?"

"Ageless Peak...... Is this the reason for the name?" Du Qian was a little confused. The name of Ageless Peak, since he was very young, Du Qian had heard of it, not to mention that as a citizen of the empire, even ordinary people of other forces, there were very few people who did not know the name of Ageless Peak.

This is like the Haidu Muguang Forest and the Valley of the Dragon Tooth Star that Du Qian knows, which are the most famous places in this world, as long as you live in the crowd, it is difficult to know.

But the origin of Bu Lao Peak, Du Qian really didn't know, and what the vast majority of civilians heard about was all kinds of magical legends, which were quite far from the truth.

She is right, you should know that the world we live in may be constantly changing for various reasons, and the geology of the Zhoushan Mountains is also constantly changing. Only the Ageless Peak, whether it is wind, rain, thunder and lightning, water, fire and earthquake, since there are records, this mountain has never changed. Qian Wuming said.

As they spoke, everyone followed the flow of people and had already entered the entrance of the cave, and the light instantly dimmed and turned into a soft artificial light source.

The mountain wall is still very narrow, no more than three meters high, and in the narrow passage, you can smell the breath, and it is full of a strong sour smell.

"It's good to get used to it, there are very few places with water in the cave, and it's hard to find a place where you can take a bath. Qian Wuming said softly.

"Hmm. Du Qian understood that this Dongtian adventure seemed to be very different from what he had guessed before.

Originally, Du Qian was reluctant to join this kind of adventure, in his opinion, it was like a tourist-like adventure. Just look at the composition of the team, everyone is delicate and expensive, who wants to really take risks?

Now it seems that the noble children of the empire are not as unbearable as they imagined.

The narrow passage is not very long, about 200 meters, inclined downward, and suddenly a large karst cave of tens of thousands of square meters appears in front of you.

At this time, the cave was crowded with people, and the voices of people were loud and noisy. There was a long stream of people, waiting in line to leave the cave, and most of the people were sitting on the ground, resting.

The part on both sides of the mountain spontaneously formed a small market, and the cries of selling came and went.

There are more people, the area is smaller, and this huge karst cave with tens of thousands of square meters makes Du Qian feel that it is much more chaotic than the most lively vegetable market in Shangjing.

The flow of people entering the cave began to disperse from here, and some of them moved slowly forward along the trading stalls on both sides, watching as they walked.

More teams, squeezing through the crowd, walked towards the opposite hill.

Zhu Ke stopped, waved his hand and said, "Sweep the goods, gather in front of the cave." ”

"Yes. Everyone responded in unison, looking at the way they were accustomed to it, Du Qian knew that these people often came here.

"Follow me. Qian Wuming said, and with his attendants, he squeezed a path through the crowd and walked towards the stall on the right.

Du Qian and Yao Jing followed closely behind, anyway, they didn't understand anything, just follow along.

It was easy to squeeze to the stall, and the attendants who had no life for money walked to a stall and kept asking, "Is there a stone drum?"

If the stall owner shakes his head, the attendant will move on to the next stall and ask the same question.

Du Qian noticed that some stall owners nodded slightly, and the attendant would stretch out his right hand and hold the stall owner's hand, and the hands of the two kept moving in their sleeves, and after a while, they determined the price and traded with their identity cards.

During the entire transaction process, neither party said a word, except for seeing the card transfer, Du Qian didn't even see the things in the transaction.

"This kind of trading method, which is very ancient, is called changing hands, and all the transaction content is completed with different fingers, and outsiders will never see it. Qian Wuming explained softly, following behind the five attendants.

Du Qian watched carefully, what the stone drum was, he naturally didn't know, in terms of quantity, it shouldn't be much, walked dozens of stalls, and only received three, as for what the stone drum looks like, Du Qian hasn't seen it until now, and the volume should be very small.

Dozens of attendants, divided into transactions, each person is responsible for dozens of stalls, there are not many stall owners who really have goods, and when trading, they don't care about the price, so the speed of the transaction is very fast.

As soon as I walked through, the transaction was completed, and I followed the flow of people and soon came to the opposite side of the cave. When he got here, Du Qian understood what Zhu Ke meant by Jiadong.

On the opposite side of the cave, there are two openings, the one on the left is painted with paint above the opening, and the other cave on the right side about 100 meters above is painted with 'B'.

Du Qian soon saw the stone drum, the so-called stone drum, which looks like a stone ball, with a slight difference in shape, mostly elliptical, with a diameter of about five centimeters for the large one and only two or three centimeters for the small one.

"This is a stone drum? It looks like a stone. Du Qian asked softly.

"Well, it's easy to tell if it's a stone drum or not, and it's hard to know if it's useful. Fortunately, there is Captain Zhu Ke, and most of them are unwilling to spend too much money on the stone drum. ”

All the stone drums were gathered together, and only twelve were received, which was really rare compared to the hundreds and nearly a thousand stalls on both sides of the cave.

Zhu Ke squatted on the ground, gathered the stone drum in front of his eyes, put his index fingers and middle fingers together, pointed at the temples, and stared at the stone drum in front of him, looking quite ridiculous.

A few seconds later, sweat came out of his forehead, and as time passed, the beads of sweat became more and more, and in only about half a minute, Zhu Ke was already sweating profusely.

Putting down his fingers, he shook his head in disappointment, hesitated, looked at Du Qian, and said, "Boss Du, do you want to take another look?"

"I don't understand at all. Du Qian replied, he didn't even know what the stone drum was, and he couldn't understand what Zhu Ke was doing.

"It's simple, look carefully at what's in the drum. Zhu Ke said.

Du Qian was speechless, these are stones, who can see the things inside through the outside?

From Zhu Ke's words, Du Qian somewhat understood that these stone drums should have nothing to do with stones, and they don't seem to be natural. (To be continued.) )