Li Jing dived into the underground river again, and after diving more than 500 meters, all information transmission between him and the ground had been interrupted. I am really unaccustomed to the lack of sound in my ears www.biquge.info pen "Fun", as if the whole world is the only one left, and the world seems to collapse at any time.

But he was not afraid, and continued to go deeper alone.

It didn't take long for Li Jing to encounter a fork, branching upward.

"Could it be that apart from the entrance on the mountain, there is another exit at the foot of the aunt's mountain?" Li Jing was surprised, and after thinking about it, he should explore this branch first. This time, in addition to finding the unknown creature, his mission is to detect the specific situation of the dark river, and the equipment on his body can record the distance and altitude, and he can draw a map of the dark river after he returns.

Originally, the dark river was going down, but this branch is going up, which is a little different.

On the ground, the expert group has come to the village below the mountain with a sensing device, which can sense the location of Li Jing. Sometimes it's a road, sometimes it's a house, or even a toilet...... When the people in the village heard that there was a person underground, they were a little hard to believe, and everyone was amazed, joking that there were really people who knew how to escape from the ground.

Underground, Li Jing frowned, because he found many beer bottles, glass shards, rusty iron devices, etc. in the dark river, and there were human pollutants in the underground river! It's kind of incredible.

He even saw a well, the kind of iron pipe well, which happened to be drilled in the dark river, and it was estimated that the water source was very abundant, and he couldn't use it no matter how he used it...... But the owner of the well probably didn't expect that the well water, which he thought was clean, was full of garbage around the iron pipes!

How did all this garbage come about? Li Jing was still very confused, but he soon found the answer, it turned out that this dark river was still connected to the river below the mountain, and these domestic garbage were sucked into the dark river at a special time, thus polluting the entire underground dark river.

"Why did it stop? And now the signal is very strong, it should not be deep from the ground. ”

The team had already arrived at the river with their sensors, but as they were about to cross the river, the technical assistant suddenly stopped.

"The riverbed is soft, nothing will happen, right?" The geologist asked nervously, and this made everyone's nerves tense.

"No, Li Jing has already turned back!" The technical assistant suddenly exclaimed, and then returned to the village according to the induction, and the underground is the location of the fork of the dark river before continuing to walk in the previous direction.

It turned out that the entrance of the river had been blocked by silt, and Li Jing could not get out of the river, so he could only return the same way and continue to explore after returning to the main road. However, his mood is still very heavy, not only can you see human domestic garbage on the branch of the dark river, but he can also occasionally see some bottles and cans on this trunk, all kinds of domestic garbage, here is a hundred meters underground, it is simply shocking.

The water of the dark river looked very clear, but Li Jing knew that it was actually polluted. The water of the dark river flows slowly, and the household waste may be washed hundreds of kilometers away with the dark river.

The water of the dark river actually penetrates down from the ground, and the pollution of life on the ground, agricultural pollution, industrial pollution, etc., will let the water source carry pollution into the dark river, thus polluting more places. The environment of this Gupo Mountain is still good, and other places are much more serious, and the invisible pollution is more serious than the ones in front of you.

Continuing to go deeper, Li Jing actually found a group of shrimp on the way, which was transparent throughout, like a crystal handicraft. But they are alive and can jump, but the lack of sunlight makes them strange. Reaching out and grabbing it, Li Jing really grabbed one and put it in his pocket of the net, these will be very precious research materials.

However, the creatures in the dark river are still very rare, some transparent small fish, some strange crystal shrimp, and Li Jing even saw some small jellyfish. However, he did not dare to provoke easily, jellyfish are aggressive creatures, and can even be fatal.

"If that creature lives here, will it feed itself on these little foods? This is clearly unreasonable. Li Jing thought to himself, such a big thing needs a lot of food, and these small fish and shrimp can't meet its needs at all.

There were some fish on the waterhole at the entrance, and although the river under the village was blocked by silt, Li Jing also saw some loaches and the like, but these foods alone should not be enough.

After walking for more than an hour, except for the cave is water, Li Jing doesn't know when it will end. Some dark rivers can stretch for hundreds or thousands of kilometers, even into the ocean, and it is impossible for him to explore them all the way. Not to mention whether the gas cylinder on his body can support him until any time, even if he is hungry, he can starve to death, there is nothing to eat, and there is no way to eat.

It's just that Li Jing has better patience and courage, and if he were someone else, he would have already turned around and gone back, and he didn't do anything he wanted.

The people who tracked the signal on the ground Li Jing were already a little nervous, and because of the rugged road and complicated environment along the way, they almost lost the signal several times.

"It's been more than two hours, and the straight-line distance is already two kilometers, why hasn't Li Jing stopped yet."

"Could it be something wrong?"

"He's still moving, what's the accident?" Jiang Yuanxin asked fiercely, she was already nervous to death all the way, and of course she was not happy to hear this.

"The water in the dark river is fluid, and in principle, it is possible to be swept away by the current in the event of an accident...... Of course, this is unlikely, unless there are some deadly creatures inside. ”

"Also, although this oxygen tank has a large capacity, the compressed air in it won't take too long, so he should return in time at this time!"

As soon as she heard this, Jiang Yuanxin's heart lifted, even if she was barbaric and willful, she shouldn't let Li Jing go down again.

"What nonsense, hurry up and follow the signal, don't lose it!" Jiang Xishan frowned and said unhappily, but he could see that he was also nervous. If Li Jing had any accidents below, he really couldn't go back and explain to Li Jing's relatives and friends. But now, there is nothing to do on the ground, even if you know that something is wrong, you can't rescue it, and you can only continue to follow the signal for the time being.

Li Jing advanced for more than ten minutes, glanced at the gas gauge in the oxygen cylinder, and had to stop. In fact, he should have turned back a long time ago, but because he was unwilling to walk for another half an hour, he had already reached the limit.

The dark river in front of him has begun to change dramatically, and there is only space that can only pass through people along the way, and there is a huge geological cave in front of him, or a hard rock, and the whole line of sight suddenly opens up.

Also, the number of those transparent small fish and shrimp has also increased greatly compared to before!

Suddenly, Li Jing had the desire to explore again, but he knew that he couldn't, and now he had to turn back, less than one-third of the air in the oxygen tank was left, and the return journey was even more difficult because it was a countercurrent.

Although he left a positioning point every short distance along the way, and he could use the shuttle function of the space-time tree to shorten the return time, how could he explain it to the people on the ground? Turn off the camera and pull out the signal transmission equipment...... It's okay to avoid suspicion, but that only worries them.

(To be continued.) )