The walkie-talkie is a device that is very convenient to use outdoors.

However, because it uses electromagnetic waves to transmit information in the radio frequency band, there is a high chance of interference in areas where electromagnetic waves and magnetic fields are chaotic.

It is very likely to "catch up" with other people's frequencies, which is commonly known as "string stage".

Previously, when entering this level, their walkie-talkies were disturbed and they lay down collectively.

Now listen to what Lao Wei meant, before that, he received a voice from the walkie-talkie, asking him to throw down the walkie-talkie and go to join the large army.

As for the source of that voice, it is now certain that it was definitely not from Lin Yi.

People on the scene can attest.

"In other words, Lao Wei was attracted by the sound on the walkie-talkie, and then left the agreed place, and then was used by Yu Wenrui and became his puppet."

"That thing looks like a carrot has become fine, and it can still have so much energy?"

Lin Yi pondered for a moment.

Shook his head decisively.

"Although Yu Wenrui can know the situation in the underground cave through sound vibrations, he can also affect the communication between us through the unique magnetic field of the underground.

However, it was absolutely impossible for him to simulate the signal of the walkie-talkie, and then emit a frequency similar to a human voice to interfere with Lao Wei's judgment. ”

"yes, it has to have this ability, and it ends up like this?"

"Consultant Lin, what do you think of this master?"

"The third child analyzed with me just now, the reason why Lao Wei was so targeted by Yu Wenrui was because he might have the blood of the Xianbei people.

Lao Wang also said that the reason why Yu Wenrui ended up like this was also due to the Xianbei Tuoba Mu, so he was the most seriously injured.

As for the intercom signal of the serial station, it is very likely that he inhaled too much fog in the tunnel, causing his senses to be disturbed.

Even though he had walked out of the tunnel, he was still affected. ”

After listening to his explanation, everyone pondered in their hearts.

After going through all the causes and consequences, this statement is still relatively convincing.

Even Lao Wei himself felt that he might have hallucinated before, which triggered a chain reaction that led to a series of things that followed.

"I do feel a little dizzy coming out of that pit, and as for the bloodline, I really don't know."

"It's okay if you don't know, it's just our speculation, let's rest for a while, you're more injured than them, don't come down and walk around for the time being."

Lao Wei nodded, took the water bottle and took a few sips, and lay back on the stretcher.

When a few of them walked away, Bai Lu beckoned to Lin Yi and called him over.

"Brother Lin, why do I think this thing is a bit strange, I have used this thing many times, there are things on the stage, but it is not common, and Lao Wei is also an old criminal detective, even if there is a slight poisoning, this judgment should still be there."

Do you think there really is another radio signal here? ”

Lin Yi frowned.

"Just say what you think."

"Do you remember that little day advance team that was lost in the hole?"

After her reminder, Lin Yi suddenly reacted.

I was in a tense state just now, and all kinds of things were mixed together, so I forgot about it completely.

According to their previous speculation, the Einsatzgruppen must have all died in this cavern full of traps, leaving not only a living mouth, but not even a trace of superfluity.

Therefore, the guy surnamed Gong sneaked into the Ganlong area in the name of teaching, and by studying Yu Wenrui's family history, he was actually looking for the Tibetan Soldier Cave built by Zhang Ji and Yu Wenrui back then.

Its real purpose was to find the advance team that had secretly entered the country back then.

If these assumptions are true, then the advance team's motive was not just to find a way, but to have other purposes.

Thinking of this, Lin Yi moved his gaze to the top of his head.

Now this passage is a dark passage that has been reopened after being repaired by Yu Wenrui.

Above the head, it is the original site of the Tibetan Soldier Cave built by Zhang Ji back then.

Judging from the traces encountered before, the advance team of this small day not only failed to find the right way out, but also failed to find the existence of Yu Wenrui's secret passage.

The end result was total annihilation.

"Could it be that this is a 'ghost signal'?"

"This possibility is not ruled out. Many overseas explorers have recorded stories about ghost signals in their travelogues, such as the sea at sea, when they suddenly received a radio distress signal, but when they searched for the past according to the coordinates it transmitted, they found nothing at all, and later found that there had been a shipwreck in that area.

Some people go to the Grand Canyon, karst caves and other places, and they will also be interfered with by some kind of radio signal, and finally learn that an expedition team has arrived here, and finally all of them die.

That's why Westerners call it a 'ghost signal'. ”

Bai Lu recounted the rumors she had heard about the 'ghost signal' when she was in school.

Lin Yi is also thinking about this now.

The so-called "ghost signal" is a special kind of magnetic field, and they have encountered more bizarre things than this, so this concept is not uncommon to him, and it is acceptable.

At this moment, Wang Qiang in front suddenly turned his head and shook the walkie-talkie at Lin Yi and them.

"Lao Lin, I've received a signal here again."

Lin Yi immediately turned on his walkie-talkie, and there was a sound of pulling and pulling from it, and then he vaguely heard one or two unclear voices coming from inside.

The complete sentence doesn't sound coherent, but a few key words are quite clear.

"Drop, U-turn, return, big troops, assemble!"

Lao Wei, who was lying on the stretcher, suddenly reached out and patted the frame of the stretcher.

"Yes, that's the voice, that's what I heard before."

"Are you sure it's the voice?"

Lao Wei closed his eyes and listened carefully, and nodded slightly.

"Eighty percent is this sound, maybe just like Consultant Lin said, because the poisoning affected the senses at that time, the brain judged that this sound was made by Consultant Lin."

"There is this possibility, in the case of poisoning, the brain will automatically complete the information according to the information processed before, and I and Lao Wei have just separated, and he thinks that these messages are sent from me.

It's actually caused by other signal strings. ”

"And where do these signals come from?"

Everyone wondered.

Lin Yi stretched out his finger and pointed to the top of his head.

"It should be above our heads, let's continue to move forward, always pay attention to the strength of this signal, once the signal becomes clear, let's go up to the top and take a look." (End of chapter)