Zhai Qinghe sat in a simply furnished room with only a snow-white bed behind her, which looked like a hotel or guesthouse.
But apart from that, there was no other information, and even the curtains behind her were drawn tightly shut.
Just when everyone had glimpsed a glimmer of hope, it vanished in an instant.
Lin Yi sighed: "She even drew the curtains tightly, probably so we wouldn't be able to tell her location from the scenery outside, and how would we find her?"
Jian Zhizhen took the phone from Qin Yubai, turned the volume up to the maximum, and listened carefully.
Then he looked at Qin Yubai and said, "Listen, the sound of the waves."
A faint sound of waves could indeed be heard in Zhai Qinghe's voice as she walked away.
Qin Yubai lowered his eyes and met her gaze, instantly understanding her meaning.
The base is very close to the coast, and you can hear the sound of the waves.
The place where Zhai Qinghe was located was a bit far from the coast, and the sound of the waves was very faint, but still audible.
Jian Zhizhen held her phone and gently touched the device on her wrist to wake up Jian Ji.
"Xiao Ji, record the sounds for me, and separate the sound of the waves from them."
Jian is a cool and aloof woman with few words. After receiving the order, she replied "Okay" and immediately started working.
Qin Yubai and Jian Zhizhen were indeed on the same page. Without even discussing it with her, he got up and left.
He went into the courtyard and instructed Qin Wang to measure the wind speed outside.
The other guests were a bit confused when they saw one of them separating audio tracks and the other measuring wind speed.
Zhou Sui simply asked directly, "I know you two must have come up with another idea. Can you explain to us what the method is?"
Jian Zhizhen thought for a moment and explained in simple terms: "Everyone should have done a classic math problem in elementary school: The speed of sound is 340m/s. After 10 seconds, how many meters away can a person hear the sound?"
Before he could finish speaking, Li Nanyan immediately gave the correct answer: "3400 meters!"
"..." That's a great calculation!
But that's not what Chien Chih-chen wanted to say.
She continued to explain, "What I mean is that the distance between two places can be calculated from the sound. Once we analyze the sound of the waves in Zhai Qinghe's background environment and compare it with the sound of the waves here, we can calculate how many seconds it took for the same wave sound to reach our base and Zhai Qinghe to arrive."
As she spoke, Jian Zhizhen looked down at her wrist and said, "Our equipment in the 23rd century is very advanced. Even if we keep talking here, it can accurately record the sound of the waves."
Only then did she reply with a haughty, "You flatter me."
Everyone nodded in agreement; Jian Zhizhen's explanation was easy to understand, and they all comprehended it.
Only Lin Yunfei remained silent with a cold and sullen face.
She was beginning to understand Zhai Qinghe's feelings.
Who wants to see Chien Chih-chen constantly stealing the spotlight!
She could only be thankful that she wasn't being broadcast live and the audience couldn't see it.
However:
[lazy cat: Teacher Jian's mini-class is in session again! This time, we'll be discussing how elementary school knowledge can be applied in real-life situations!]
[Black Bean Sprout: Lin Yunfei's mystical abilities are completely useless at crucial moments...]
[Painful Handsome Man: So, does that mean Jian Zhizhen's elementary school knowledge is definitely useful? Theory is theory, practice is practice. Only praise him if he can actually calculate it and find the right person!]
Zhou Sui glanced at the courtyard, then asked Jian Zhizhen, "Why did Qin Yubai go out to calculate the wind speed?"
"On calm, windless flat ground, the wind speed is 340 m/s, but the speed of sound is easily affected by wind speed. Headwinds reduce the volume of sound, and the wind height affects the speed of sound differently. Slight wind speeds can be ignored, but the sound of waves at the seaside is loud, so the wind must be taken into account."
Just as Jian Zhizhen finished explaining, Qin Yubai returned.
As the most advanced AI assistant of the 23rd century, Qin Wang easily drew a very accurate graph of wind speed difference in just a few minutes.
In short, the sound of ocean waves in Zhai Qinghe's background audio was also separated, and compared with the sound of ocean waves here to calculate the interval in seconds.
Jian Zhizhen combined and calculated all the data obtained.
Soon, several possible locations were obtained.
Upon opening the electronic map, only one location was a guesthouse or hotel.
The other locations are kindergartens, fruit shops, restaurants... it's unlikely that there would be a room like this.
The audience had just received a vivid and concrete elementary school math lesson, and they all expressed their opinions:
[Yan Wei is cheating, isn't he? This proves that mastering math, physics, and chemistry is more useful than some people who are good at divination in crucial moments. (No offense intended to that certain mystical girl, just encouraging everyone to study hard.)]
[Not Allowed to Be Erotic/Sexy: What does this tell us? It tells us to believe in science! This is truly a case of elementary school science combined with advanced technology defeating metaphysics!]
[Zi Yan: There is truth to metaphysics. Some metaphysical masters are truly incredibly powerful; it's just that Lin Yunfei can't fathom them! This is Lin Yunfei's personal behavior; don't generalize it to the entire metaphysical community!]
[The Wounded Beauty: Jian Zhizhen has only deduced the location so far. Has she really found the person? Don't look back; there's no one there at all!]
Although no one is sure where the person is, at least we have a direction and don't have to guess here.
Lin Yi glanced gratefully at Jian Zhizhen and Qin Yubai: "I'll go and bring her back right away."
Mashiro and the other woman spoke in unison, "We'll go with you."
Li Ze rolled up his sleeves and said, "I'll go with you guys. If we run into a situation like last time, with barbarians, having one more person means we can fight together."
Seeing this, the others also expressed their desire to go together.
But Lin Yi felt that sending too many people was not good, especially since some of them were not strong in combat or intellect. If they encountered danger later, he would have to spare time to protect them.
So he said, "Jian Zhizhen, Qin Yubai, and Li Ze, the three of you come with me. The rest of you stay at the base and keep an eye on Zhai Qinghe online. If she does anything foolish, quickly send messages in the chat to stop her."
Lin Yunfei was initially quite angry that Lin Yi hadn't chosen her, but she once again realized that her position in Lin Yi's heart was slowly being undermined by Jian Zhizhen.
But upon hearing what she said next, she calmed down.
Yes, if she stays at the base, she can use the top-ranked account to urge Zhai Qinghe to commit suicide as soon as possible.
Even if she turns back and is rescued, she will still have to worry about this threat.
So she nodded obediently: "Okay, I will persuade Zhai Qinghe."
Afterwards, Jian Zhizhen packed a bunch of medicines to take with him, just in case.
Next, one group set off, while the other group stayed behind at the base.
Lin Yunfei went back to her room alone; she wouldn't use her alternate account in front of these guests.
Zhou Sui and Xu Qiuyuan sat on the sofa, while Li Nanyan sat on the sofa opposite them, both staring at Zhai Qinghe.
The number of viewers in her live stream gradually increased, and they were all posting:
Was yesterday's announcement true?
[Those who try to create hype will suffer a terrible fate!]
Hurry, hurry, I can't wait any longer!
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