This kind of radiation fluctuation Qi Lin was very familiar with, exactly the same as the pile of crystals that he had just absorbed from the monster's juvenile body!

With such strong energy fluctuations emitted through the thick layer of permafrost that resembled a barrier, Qi Lin couldn't believe how many such crystals were buried above the dome of this underground cavern.

And for Qi Lin, this crystallization can be directly absorbed and completely transformed into his own strength and level!

Qi Lin's breathing couldn't help but become a little short.

After inspecting the entire underground cavern and confirming that there were no living creatures other than himself, Qi Lin raised his head and looked at the dome that emitted the energy fluctuations unique to crystals.

This underground cave is very large, but the height of the dome is not high, only about five or six meters on average, and the highest place is less than ten meters, and the location where the crystals are buried is just above this average value.

Since the Hlens area is completely a battlefield like a plain except for a circle of mountains like an iron wall outside, Qi Lin does not carry any ropes, hooks and other things, but this is not difficult for him Qi Lin, after confirming the location of the excavation, Qi Lin immediately began to move the piles of asphalt uranium ore over, padding under this position.

Generally speaking, uranium ore in its natural state is very stable, and the radioactivity naturally released through its slow decay is not strong, and like the fuel rods made of highly enriched uranium, humans can even directly reach it by hand - the reason why the reactor at the Hellens power station produces such a high level of radiation is because the spent fuel that has undergone the fission reaction in it is exposed.

Of course, in addition to spent fuel, those fuel rods that have not yet been used, under the effect of the monster's special catalytic ability, will also quickly produce a fission reaction, thus releasing enough powerful radiation energy for it to absorb.

And this vein is no different.

Although the radioactivity of the asphalt uranium mine itself will make people who have been around for a long time feel uncomfortable, the amount of radiation will definitely not reach the level of fatality in a short time, but after the catalysis of these monsters, these ores that were not as radioactive as imagined have completely changed.

Under this unknown catalytic action, uranium-235 and uranium-238 inside the ore began a slow fission reaction in the presence of large amounts of impurities, thus emitting a large amount of radiation into the environment.

If ordinary people are exposed to these ores without protection, it will not take ten minutes to have dizziness and nausea, and if they are in direct contact with these ores, the skin in the contact area will be red, swollen and itchy in a short time, followed by blood blisters and peeling......

This vein, or rather, the part of the vein around this underground cavern, is no longer a normal uranium vein, it is like a super nuclear power plant that has had a leak - with the current technology and capabilities of humans, it is impossible to mine the uranium contained here, but it is a perfect lair for these radiation-feeding monsters.

Qi Lin constantly carried these dangerous and deadly ores, these ores full of radioactivity were unavoidable for ordinary people, but for Qi Lin, it was not enough to even plug the gap between his teeth.

After Qi Lin's efforts for more than half an hour, a conical round platform with a height of nearly five meters and made of asphalt uranium ore piles appeared in the underground cavity, rubbing his dirty hands on his pants, and Qi Lin climbed to the top of the round platform from the slope on one side of the round platform.

It was less than a meter away from the dome of the underground cavern, and Qi Lin could barely keep his head from hitting the dome by bending over and squatting on the top of the round platform.

In this position, the energy wave energy that Qi Lin felt was even stronger.

Stretching out his hand, he touched the permafrost layer above his head, and knocked lightly, the dull sound made Qi Lin understand that in this underground cave and the space above his head that might store the kind of crystals, the thickness of the permafrost layer was at least half a meter or more.

The hardness of frozen soil is very high, because almost all of the water in the soil is in the form of ice crystals, and the density of the soil itself is very high, and there is a large amount of fine gravel mixed with it.

Ordinary people want to dig deep pits in the tundra, the most commonly used tools are excavators and pickaxes, with the metal folding sapper shovel that Qi Lin carried, this half-meter-thick permafrost layer is less than half, even if the quality of the sapper shovel is good, it has to be scrapped.

However, this problem was not a problem at all in front of Qi Lin, who was already a fourth-level evolutionary.

With a slight movement of his mind, a unique shape of the "bone shovel" appeared in Qi Lin's hand, this bone shovel has a perfectly ergonomic curved grip, the end of the half-cylindrical shovel head length of 20 centimeters, the edge of the shovel head is extremely sharp, under Qi Lin's nearly 40 points of strength, it can be cut into the hard frozen soil like cutting tofu.

And the half-cylindrical bucket can easily bring out the excavated debris - if someone who is keen on tomb robbery or archaeology sees this strange shovel generated by Qi Lin with bones, they will definitely recognize the prototype of this thing-

This is a famous Luoyang shovel!

Qi Lin poked the front end of the bone shovel into the frozen soil like the Luoyang shovel, and then turned half a circle hard, and a large cylindrical frozen soil was separated from the surroundings.

Qi Lin made seven or eight identical round holes one after another, and then based on these round holes, he gradually expanded, and dug down the frozen soil around the round holes.

In less than an hour, a shallow pit that was half a meter wide and twenty or thirty centimeters deep was dug out by Qi Lin.

The next step is a mechanical repetition of the action of punching holes with a bone shovel, enlarging the holes, and finally digging up all the surrounding frozen soil......

After several hours of hard work, between Qi Lin and the space where the crystals were hidden, there was finally only a layer of permafrost less than five centimeters thick.

Through this layer of frozen soil, that kind of energy fluctuation was already very obvious, and even the energy vortex in Qi Lin's body was pulled by this energy fluctuation, and the speed couldn't help but speed up a few points.

After a few taps, Qi Lin could already confirm that above this underground cavern, it was another hidden hollow cave.

Although he didn't know how that slug-like monster managed to dig up the frozen soil and seal it again, or that there was another secret passage in the cave above, Qi Lin knew one thing - that is, the crystals stored on it were definitely enough for him to be promoted to a fifth-level evolutionary!