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

One-third of the hole entrance is also separated by iron railings, with the entrance on the right and the exit on the left.

The entrance to the cave is not big, and the iron railings occupy space, which allows people to walk, makes it look much smaller.

Not only that, Du Qian also saw that no matter the adventurers entering and leaving, everyone was carrying an extremely huge backpack. Many people's backpacks were more than fifty centimeters higher than the head of a human.

Everyone is very lawful. Although the backpack is very large, its width is almost the same and it will never exceed my shoulder width.

The human body, backpack, volume, width, everything is within calculation. The entrance is just enough for two people to walk side by side, and the exit can only allow single people to walk.

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

Du Qian praised in his heart that the power of the country is indeed powerful. He has surprised him many times along the way. Even though he had guessed a few points before, the flow control ability of this cave heaven still made him amazed.

Everything here is to use the resources in the cave to the extreme.

Are the resources in the cave really that important?

Why not continue to expand the entrance of the cave? Even if Qian Wuming said before, this is already the limit, Du Qian still doesn't believe it. With the power of the empire, even if the entire Bu Lao Peak is removed, it should not be a difficult task. It is just a small hill. In the Zhoushan Mountains, Bu Lao Peak is far from being a strange peak. Whether it is the scenery or height, or the majestic things, Bu Lao Peak cannot be ranked at all.

"I'm still guessing, haha." Qian Wuming, who was walking side by side with Du Qian, gently touched Du Qian with his shoulder and said with a smile.

"Do you know what I'm guessing?" Du Qian turned his head and looked at him and said. Although this guy was very smart, Du Qian didn't believe that he could guess what he was thinking. The legendary things like mind reading were only stored in fantasy. Not to mention the talisman master, even the mysterious soul master did not have this ability.

"Of course, you are guessing that since the empire has increased the utilization rate of the cave heaven to this level, why not push down the Bu Lao Peak and expand the hole? Is it difficult to guess?" Qian Wuming said with a smug smile on the corner of his mouth.

"Awesome, how did you guess?" Du Qianyi raised his thumb, his steps under his feet were not slow, and he followed Zhuo Ya and Qian Wuli in front, keeping a distance of about half a meter.

"Hey! No need to guess, nine out of ten people who have been here for the first time think this way. The guys who have the chance 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 is quite unfriendly to him. He doesn't remember when he offended him.

"You are also a person who has the opportunity to enter the cave world, and you are also smart?" Du Qian didn't care about the relationship between her and Qian Wuming at all, and said retorted.

"You are right. I was smart at the beginning." Qian Wuli admitted it happily.

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

"It's very simple. The stones around the cave are strange. With the current ability of our humans, there is no way to use them. Knife and axe chop, burn fire and water. All the methods you can think of are ineffective. This kind of stone is almost everywhere in the entire Bu Lao Peak. It can be said that more than 95% of the Bu Lao Peak are composed of this kind of stone. How did you get the name Bu Lao Peak? Did you take it randomly?" Before Qian Wuming answered, Qian Wuli said first, and his voice was still cold, as if Du Qian was disliked.

"Bullain Peak... is this the name given?" Du Qian was a little confused. Du Qian had heard of the name Bu Lao Peak since he was very young. Not to mention the people of the empire, even ordinary people from other forces rarely don't know the place name Bu Lao Peak.

This is like the sea capital Mu Guanglin and the valley of Dragon Tooth Stars that Du Qian knows, it is the most famous places in the world. As long as you live in the crowd, it is difficult to think about it or not.

But Du Qian really doesn't know the origin of Bu Lao Peak. I think most civilians hear about all kinds of magical legends, which are quite far away from the facts.

"She is right. You should know that the world we live in may be constantly changing due to various reasons, and the geology of the Zhoushan Mountains is also constantly changing. Only the Bu Lao Peak, whether it is wind, rain, thunder, lightning, water, fire, earthquakes, from the beginning of record, this mountain has never changed." Qian Wuming said.

As they spoke, everyone followed the crowd and had already stepped into the entrance of the cave. The light instantly dimmed and turned into a soft artificial light source.

The mountain walls are still very narrow, with a height of no more than three meters. In the narrow passage, you can breathe and are filled with a strong sour smell.

"Just get used to it. There are very few places with water in the cave. It is difficult to find a place where you can take a bath." Qian Wuming said softly.

"Yes." Du Qian understood that this adventure trip to the cave seemed to be very different from what he had guessed before.

Originally, Du Qian was not willing to join this kind of thing. In his opinion, it was like a travel adventure. Just look at the team members and you will know that each person is delicate and expensive, who is willing to take the risk?

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

The narrow passage is not very long, about two hundred meters, tilted downward, and suddenly it became clear before my eyes, and a large cave of tens of thousands of square meters appeared.

At this time, the cave was crowded with people, with loud noises and extremely noisy. A long stream of people was waiting in line to leave the cave, and most of the people sat on the ground and were resting.

The parts on both sides of the mountain backing the mountain spontaneously formed a small market, with hawking sounds rising and falling.

With more people, the area becomes smaller. This huge 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 crowds entering the cave began to spread out from here, and some of them moved slowly along the trading stalls on both sides, watching while walking.

More teams squeezed through the crowd and walked towards the opposite mountain.

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

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

"Come with me." Qian Wuming said, and took his servants to open a road in the crowd and walked towards the stall on the right.

Du Qian and Yao Jing followed closely behind. Anyway, they didn't know anything, just follow and read it.

After finally rushing to the stall, Qian Wuming's servants walked to a stall and kept asking: "Do you have any stone drums?"

If the stall owner shakes his head, the attendant will continue to walk 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. The two of them kept moving in their sleeves. After a while, they determined the price and used their identity cards to trade.

During the entire transaction process, neither party said a word. Apart from seeing the card transfer, Du Qian didn't even see the transaction.

"This kind of trading method is very ancient and is called a change of hands. All transaction content is completed with different finger words, which outsiders will absolutely not see." Qian Wuming explained softly, following the five servants.

Du Qian looked carefully and saw that he naturally didn't know what the stone drum was. Judging from the quantity, there shouldn't be many. After walking through dozens of stalls, he only received three. As for what the stone drum looked like, Du Qian hadn't seen it yet, and the size should be very small.

Dozens of servants were divided into transactions, each of whom was responsible for dozens of stalls. There were not many stall owners who were really stocked, and they didn’t care about the price when trading, so the transaction speed was very fast.

After walking and passing by, the transaction was completed. Following the crowd, I soon arrived opposite the cave. Only after this did Du Qian understand what Zhu Ke meant by Ke.

Opposite the cave, there are two holes. Above the hole on the left, "A" is written in paint, and above the other hole about 100 meters on the right, "B" is painted.

Du Qian soon saw the stone drum. The so-called stone drum looks like a stone ball with slightly different shapes, mostly elliptical ones, with a diameter of about five centimeters and a small ones only two or three centimeters.

"Is this a stone drum? It looks like a stone." Du Qian asked softly.

"Well, is it easy to distinguish between stone drums? It's difficult to know whether it's useful. Fortunately, with Captain Zhu Ke, most people are unwilling to spend too much money on stone drums."

All the stone drums were gathered together, and only twelve were received. Compared with hundreds of nearly thousands of stalls on both sides of the cave, this thing is really rare.

Zhu Ke squatted on the ground, gathered the stone drum in front of him, and put the index fingers and middle fingers together with both hands, and pointed it at the temple, staring at the stone drum in front of him, looking quite ridiculous.

After a few seconds, sweat came out from his forehead. As time went by, sweat became more and more. In just about half a minute, Zhu Ke was already sweating profusely.

He put down his fingers, shook his head in disappointment, hesitated for a moment, looked at Du Qian, and sent a voice transmission: "Boss Du, do you want to take a look again?"

"I don't understand at all." Du Qian replied. He didn't even know what the stone drum was, nor could he understand what Zhu Ke was doing.

"It's very simple, take a closer look at what's in the stone drum." Zhu Ke said.

Du Qian was speechless. These are stones. Who can see what is inside through the appearance?

From Zhu Ke's words, Du Qian understood a little that these stone drums should have nothing to do with stones, and they do not seem natural.
Chapter completed!