quadruple sleep

So right now, several people are gathered together in Lu Nanshen's dormitory.

Although Bai Hao wanted to stay and help, in fact he couldn't help much, so he was sent away by Lu Nanshen. Bai Hao was so pitiful that Nian Baixiao couldn't bear it. He quietly said to Lu Nanshen, "If something happens to his roommate, he will be very anxious. Should he stay?"

The next moment he was scolded by Lu Nanshen, "Nian Baixiao, your head was kicked by an elephant? Why do I keep a love rival around for no reason?"

Nian Baixiao smiled instead of angry, "Love rival?"

Oh, he had almost forgotten that Bai Hao was Lu Nan's love rival.

"He is your fan brother now." Nian Baixiao emphasized.

"No need." Lu Nanshen said angrily.

Nian Baixiao was thinking, where did this guy's evil fire come from? Even though people were killed in Xi'an, I have never seen him so angry.

Looking back at Hang Si, everything became clear.

Hang Si came, but he was obviously here to help. Although she looked the same as usual, she felt a little alienated from Lu Nan.

Even someone as slow as him could sense it, let alone Lu Nanshen.

No wonder he spoke so hastily.

After Bai Hao was sent away, Lu Nanshen had to focus on tracing the information in the audio, and more importantly, recalling the automatically deleted tune. Lu Nanshen believed that that tune might be the most important.

During this period, he must keep in touch with Chen Yezhou at all times.

Fang Sheng was puzzled, "The murderer is the Mr. C you mentioned, right?"

Lu Nan nodded deeply.

"How can Mr. C be sure that you can definitely hear that song? What if you don't go? What if you go and the song is automatically cleared?" This is a question that Fang Sheng can't think about.

Before answering this question, Lu Nanshen looked at Fang Sheng and then at Nian Baixiao.

In the situation where four people got together today, neither he nor Nian Baixiao had it better than the other, right? He felt a change in Fang Sheng, as if he usually pretended to be coquettish when talking, but now he was straight to the point. Moreover, Fang Sheng and Nian Baixiao didn't interact much.

Although Nian Baixiao talked to Fang Sheng several times...

Lu Nanshen said, "It's not that Mr. C is sure that I can go. Who are the people in the studio? For example, Bai Hao and the others all study music. They play the music over and over again, even if they don't deliberately remember it, they will have an impression. Of course. , this also stems from Bai Hao's obedience and staying in the house without going out. If Jiang Yu was the only one in the studio, I believe Mr. C would think of another way."

It's not like he didn't assign a task to Bai Hao. He asked Bai Hao to carefully recall the music he heard at that time. This was quite a heavy task, so Bai Hao turned back without saying a word.

Lu Nanshen listened to the audio first.

In this work, Fang Sheng and Nian Baixiao only have normal ears, so essentially they cannot help much.

The person who can help Lu Nanshen the most is Hang Si.

She can determine the existence of information through the vibration frequency of sound.

The four of them remained absolutely silent while the audio was playing.

For twenty minutes, the most obvious thing ordinary people heard was the sound of the engine and the sound of wheels rolling on the ground.

Hang Si and Lu Nanshen went to analyze separately without disturbing the other.

Twenty minutes later, the two compared the information they had obtained.

It's actually roughly the same.

In the first ten minutes of the audio, you can tell from the sound of wheels crushing the ground that the car is driving on an extremely muddy road.

"There was the sound of mud being crushed and splashing." Lu Nanshen judged, "It should have rained the day before. Although the temperature in the past two days was not that low, it was winter after all. It rained the day before, and the dirt road would be It condenses into lumps when exposed to cold." Hangsi agreed with Lu Nanshen's judgment and said, "So it can be further confirmed that Mr. C's location is in the suburbs, and it must be an outer suburb. The suburbs border the urban area. This kind of dirt road is rare. "

Nian Baixiao could keep up with their rhythm, "It's easy to handle. Let's see which suburb has rained in the past two days."

Fang Sheng questioned, "Can't the other party cross the city?"

"Yes." Lu Nanshen said, "If you want to confirm this, you will most likely have to rely on that tune."

His judgment was that Mr. C divided the information of the complete route into two parts and hid them in the melody and audio, both of which were indispensable.

But regardless of whether you leave the city or not, rain is the key information. In this season, unless it rains in the south, it rarely rains in North China, so the investigation will not be too difficult and the scope can be shortened quickly.

Perhaps influenced by Fang Sheng, Nian Baixiao also began to struggle with cross-city issues.

"What if there is information about airplanes in the tune? Mr. C is driving to the airport."

Hangji looked up at him.

Nian Baixiao raised his eyebrows, "Do you think I have opened up another idea?"

"There are leaves." Hang Si said lightly.

Nian Baixiao didn't react, "Huh?"

Lu Nan sighed deeply and said, "As I said before, the car passed through a forest and there were thick leaves on the ground."

Nian Baixiao said sarcastically, "Are there no fallen leaves in the south?"

Hang Si said, "There are few fallen leaves."

"Then..." Nian Baixiao couldn't find the words to refute for a while, "Just rely on the fallen leaves to judge?"

"It can only be said to be one of the basis." Lu Nanshen explained surprisingly patiently. Perhaps because he and Hang Si had the same frequency, he was in a good mood, so he treated Nian Baixiao as warmly as spring. "Although it has rained, the wheels will make a clear sound when they press on the leaves. This phenomenon is not common in the wet and cold weather in the south."

Nian Baixiao remembered that when he stayed in Shanghai, it was really true.

Lu Nanshen and Hang Si agreed that Mr. C's location was in North China. To be precise, it was not far from this city, either in the outer suburbs or in Linshi.

"Further north there will be snow, and the sound of falling leaves will not be the same as the wheels pressing on it." Lu Nanshen gave an analysis.

In the audio, the car entered the woods ten minutes later.

Both of them listed a keyword: pigeon.

It is not difficult to judge the sound of pigeons. Nian Baixiao and Fang Sheng can faintly hear it if they calm down carefully.

"It's a group of pigeons. There should be people raising pigeons nearby." Hang Si said.

Lu Nanshen agreed with this.

The two faced each other all the way down, including the area of ​​​​the forest and the shape of the road, which were roughly the same. Seeing Nian Baixiao and Fang Sheng stunned, Fang Sheng sighed, "You can hear so much information just by listening to the sound."

All that sounded to her was the sound of wheels.

But after leaving the woods, that is, at the last minute, Hang Si and Lu Nanshen had a disagreement.

There was a very faint sound, which Lu Nanshen judged to be the sound of a windmill, which was quite far away. But Hang Si thought that it was either the sound of windmills or the sound of wind blowing over the eaves. There should be iron sheets on the eaves.

When the two of them disagreed, Nian Baixiao and Fang Sheng could only stare at each other, unable to do anything to help. When the audio was played repeatedly, no matter how they listened, they could not hear anything they said.

Not to mention the precise sound of the wind blowing on the car or the wind blowing on the iron sheet.