Finally climbed to the entrance of the cave, in the place where the light hit, you can see that it is still the same as the mountain road that came up, full of gravel, and then look deeper, the visibility gradually decreases, and slowly except for the darkness, you can no longer see anything else.

There were almost ten people in the group, leaving two to take care of things at the entrance of the cave, and the rest of the people each held a torch in their hands, letting Yu Hai walk in the middle of the group.

The torch was made of materials on the way here, and it was made from local materials, which was so powerful, they originally prepared a torch for Yu Hai, but when they were at the entrance of the cave, Yu Hai refused, so the torch left for Yu Hai became a spare.

Yu Hai must be reluctant to use torches, he is about to have a problem walking normally, and he still holds torches, for fear of burning the people walking in front of him.

He took out a flashlight, which was used in the wild, and it was said that it could shine 5,000 meters away, or whether it could make people 5,000 meters away see him, he didn't know if he had tried it.

With a headlamp on your head, you can walk as long as you can see your feet, and you'll be fine.

Seeing the flashlight and headlamp that Yu Hai took out, even if he was used to seeing him often take out some useful tools, everyone in the primitive tribe looked at Yu Hai with more and more reverence. Such a god-man, his own tribe has encountered it, and he must have saved the savior in his last life.

Relying on these faint light sources, the group moved forward slowly, and the cave was still relatively wide, and they only needed to pay attention to the gravel under their feet.

The temperature in the cave is obviously many degrees lower than outside the cave, the sound of dripping water is endless, quiet and dark, if only Yu Hai himself, he will never dare to come in. The dark environment is always enough for people to play infinite fantasies.

I don't know how long I walked, but slowly, I began to see stalactites clinging to the surrounding stone walls, hanging on the top of my head, and standing on the ground. The further you go in, the more stalactites begin to increase, and you can see a fantasy world of stalactites with all kinds of stalactites, colorful. Some look like rabbits, some animals look like tigers, and some look like a small forest, all kinds of shapes, just imagine it, isn't it the scene in the jungle just now?

Walking to an inconspicuous corner, there are obvious traces of excavation here, this piece grows a lot of white crystals, one by one protruding crystals, under the illumination of torches, under the illumination of flashlights, exude dazzling brilliance.

There are quite a lot of natural forms of white crystal, including the most common block, hexagonal columnar, columnar cluster of white crystal, overlapping growth and forming backbone, and so on. Most of the white crystals contain ice cracks, clouds and other connotations, completely transparent white crystals unless they are small in volume (directly cut from large raw ore), large volume and completely transparent white crystals are more expensive and there are more fakes on the market (especially white crystal balls). Here, however, most of them are columnar clusters of white crystals.

"The crystals we trade are mined from here, you see if they are suitable for you, which ones you like, and we will trade them with them in the future. "The patriarch was not at all worried about the treatment and came to the crystal mining site, and then he came over himself, leaving them behind and not trading with them anymore. The cave is so large that the entire mountain stretches even underground. In addition to the very wide space at the beginning, when you enter it, many paths begin to appear, some of which lead to another small cave, some of which lead to a dead end, some of which lead to the outside world, and some of which no one knows where they lead, only that the materials brought by the pathfinders have not reached the end of the road when they have been exhausted and have to return the same way.

The jungle is so big, and the wealth it has is also very amazing, and today this cave is only the closest to the tribe, or the easiest to reach. As far as their tribe knows, there are several, some of them are more secretive, and it is difficult to find the road to the cave by chance. Therefore, it is also a good way to use this cave to test Yu Hai's character.

Yu Hai took the flashlight and chose one to check, and when he observed the light, he could see a faint uniform and fine horizontal stripe or catkins-like substance. Under the light, no matter which angle you look at, it can emit a beautiful brilliance.

"To be honest, the reserves of this kind of white crystal in our place are also relatively large, not to cherish the minerals, and there are not many people who like it, but the purity of the white crystal here is still good, I like it very much, especially this kind of cotton wool, I hope to collect this mainly. Yu Hai said indifferently.

Through this period of research and study, Yu Hai has a certain understanding of crystals, especially the white crystals that appeared twice before.

After careful observation just now, most of the crystals are very transparent, almost rarely see the cotton wool, a small part of the smaller crystal in the cotton wool is more and the shape is special, there is a natural beauty, there are a few special cotton wool particularly much, the cotton wool inside has become the appearance of a small animal, this is a gift of nature, very rare.

The patriarch didn't expect Yu Hai to prefer these crystals with low transparency and impurities (cotton wool) in them. When they first found out here, they would collect large pieces of good transparency and send them back to the women at home, and their daughters were very happy after receiving them, and some of the poor transparency that was mined down was discarded in the corner by the daughters, so they didn't look down on the crystals with poor transparency, but I didn't expect Yu Hai to like these that no one wanted, and I didn't expect that there would be such a big gap in aesthetics between people.

Yu Hai observed these crystals for a while, found out the best and most vivid shape of the cotton wool in the crystal, marked it, and mined it slowly by the people in the tribe.

Because the crystal has a special shape of cotton wool is relatively rare, when I see a particularly vivid, as if there is a little white rabbit squatting on the ground to eat grass, as if alive, even the grass on the ground is very vivid. Because the size of this crystal is relatively small, about the length of an adult's palm. Yu Hai decided to mine it now, and after talking to the patriarch, he took off the dagger on his waist, dug it up carefully, and after the guidance of the primitive people on the side, he dug out this crystal completely without danger. I found a spare towel to wrap it up and carefully put it in my backpack.