Hearing this clue, Chen Tian was stunned for a moment, and then showed seriousness.

"What did you hear? Did it come before?"

"I can't remember if I've seen it before, but it always feels familiar. Su Ningxue continued to answer and gave an explanation: "I don't know how to describe this voice, it's very empty, but it makes me curious. ”

"Curious?"

Chen Tian was puzzled by this answer, so he guessed and asked, "Do you have the feeling of being attracted in the laboratory before? If so, what did you do after you heard the sound later? After all, in that situation at that time, you couldn't be unconscious as soon as you heard it. ”

Hearing the question, Su Ningxue nodded and replied affirmatively: "It's true that I didn't fall into a coma as soon as I heard it, but after a while." ”

"I don't know how long this time was, but I seem to remember hearing the sound and I looked around the chamber to determine the source of the sound. As for the attraction of this sound, I don't think it's the same as the one in the laboratory. ”

"After all, I didn't feel any pain this time, I just felt curious and wanted to find it. ”

Su Ningxue's answer surprised Chen Tian, but his intuition told him that this voice should be another manifestation of Su Ningxue's reaction with the ore.

Although he has no evidence now, this clue has clearly determined that Su Ningxue did not encounter an external force when she was in the secret room, but was affected by some factor in the secret room, so that she would fall into a coma.

"In that case, then tell me all the things that have to do with the sound until you can't recall it. ”

Hearing this, Su Ningxue nodded, and recalled the situation when she was unconscious.

"At first I just thought it was strange when I heard this sound, and at first I didn't dare to walk around, I just stayed where I was, but then I didn't know why, I always felt that this sound was there, so I was curious and started to walk around. ”

"When I first started moving around, I was just walking around the chamber, but then when I couldn't figure out where the sound was coming from, I started banging on the walls, just like when you were in the lab. ”

"Originally, I was just trying to find out why this secret room was making sounds, but then I knocked and knocked, and suddenly I noticed that the sound began to change. ”

Hearing this, Chen Tian continued to be surprised and asked.

"What's changed, and what are the characteristics?"

"I can't say what the features are, but it feels like it's changed. ”

Su Ningxue continued to recall, and replied: "This sound sounded very small at first, and I don't know where it came from, but then it gradually increased, and I also found the direction for a while. ”

"The direction of a period of time?" Chen Tian continued to ask, and was surprised.

"That's right, just for a while. ”

Su Ningxue continued to affirm, and continued: "Because after this voice increased, I did find its direction, but I don't know why, after a while, it suddenly became blurry again, making me lose my direction. ”

Chen Tian was surprised by this episode, although he didn't know how Su Ningxue determined the direction, but he knew that the changes before and after were not because Su Ningxue's ability was weakening, but because others were controlling this change.

"How did you determine the direction, and was it at the emergency exit of the chamber?"

Hearing the question, Su Ningxue was puzzled and asked subconsciously.

"Is there an emergency exit from the secret room? Uncle Li didn't tell me, I only remember that the voice was finally settled in the northeast corner, and then I didn't go back because I hit the wall. ”

Chen Tian was surprised by this answer, but this answer just verified his guess.

There is an escape passage in the secret room under the Su family's old mansion, which happens to be located in the northeast corner.

And because of his previous suspicions, he also went down with Uncle Li and went to the passage alone to check, but found nothing.

Although he didn't know why the source of the sound was there, the situation meant that the sound was likely coming from the outside world.

Because the escape passage is connected to the outside world and can only be opened from the inside, the other party led Su Ningxue to the door of the passage, which should be to let Su Ningxue open the passage.

Thinking of this, Chen Tian not only instantly understood that the purpose of the black shadow of this operation was not only Su Ningxue, but also their methods this time were quite hidden.

Especially when he used the exit of this secret room to let Su Ningxue take the initiative to take the bait, he was even more glad that Su Ningxue did not know the structure of the secret room.

Otherwise, if you are not careful, let alone unconscious, I am afraid that Su Ningxue would have disappeared by now.

And this is not the worst result, the worst result is that if Su Ningxue is really taken away by the black shadow, then Uncle Li's previous decision will be even more abrupt.

Even if he knew that Su Ningxue had one more Han Mengyun by his side, it would be useless, but Uncle Li did not arrange personnel to protect Su Ningxue, which further showed that Uncle Li had the possibility of colluding with the Black Shadow.

In this way, the inner ghost that Lao K said before is very likely to be Uncle Li, or even Uncle Li.

"Chen Tian, what's wrong with you, why are you frowning suddenly?"

Su Ningxue saw that Chen Tian was silent, so she subconsciously asked.

Although Chen Tian had thought a lot just now, since these were all his assumptions, he shook his head and returned to the topic just now.

"No, I think of something, and you go on. ”

Hearing this, Su Ningxue was surprised, but she didn't ask, but continued to say the following.

"At that time, I hit the wall, which hindered my curiosity, so I didn't continue, after all, I had been listening to this sound for a long time, and I was used to it, but I didn't expect that not long after I turned back, the voice changed again. ”

"It's a strange change this time, and it makes me feel like I can't put it into words. ”

"At first, I thought it was because I went back that the voice changed, but when I walked back again, and it still didn't change back to the previous voice, I wondered again and subconsciously remembered the voice. ”

"I just didn't expect that the more I was like this, the more I couldn't remember the voice. ”

"At that time, I didn't know what was wrong, I just wanted to memorize this voice, and then go out to tell you, but I didn't expect that this voice not only continued to grow, but also gradually strengthened the feeling that I couldn't say before. ”

"Until the end, I didn't know what was wrong, and suddenly my eyes went black and I couldn't remember anything. ”

Hearing Su Ningxue's answer again, Chen Tian was surprised, but he didn't give up.

Because through this narrative, it is not difficult for him to find that the change of this voice may be a special frequency, especially the continuous change of voice, and Su Ningxue also has corresponding changes, so he can almost conclude that Su Ningxue should not be able to withstand the resonance of this special frequency, and then led to a coma and forcibly ended the other party's conspiracy plan.