"Does this cabinet have in every of your dormitories?"

"yes, that's what the school has."

Each cabinet door was separate, but her cabinet was locked and couldn't be opened.

"Which bed does she sleep in?"

"That one, the lower bunk."

Bai Yaqing didn't touch the bed, she was investigating some details. She lives in the lower bunk, maybe she has her stuff under the bed?

"Team leader, what are you doing!?" Seeing her suddenly lying on the ground, Shasha was a little stunned.

"Don't talk."

“……”

Bai Yaqing took out her mobile phone, turned on the flashlight function, and looked carefully.

"Sasha, give me the broom."

There are no sticks, only brooms, and they have to be made from local materials.

"Give."

Bai Yaqing took out a box from inside.

"A new synth recorder?"

"Huh? What is it? ”

Xiaoyi's best friend's roommate came over curiously and asked, but Bai Yaqing reacted quickly, turned over directly to the side, and didn't show her.

"We're going to take it back and investigate, you guys have a good rest and go to class later."

………………

In order to find out who made the trouble quickly, and find out the 'ghost' quickly, the school deliberately vacated an office for the two of them.

It's just a small office, and it won't bother them very much.

"Team leader, this tape recorder...... Sounds can be synthesized. ”

"Yes, if this assumption is true, then it is clear why Xiaoyi's voice appeared."

If this troublemaker is Xiaoyi's best friend, then it's very simple to get Xiaoyi's voice.

The biggest advantage of this recorder is that you can synthesize her voice according to a sample of a voice, and you just need to wear that headset to speak, and the sound produced will naturally be that synthesized sound.

Moreover, there are also recording and playback functions......

"This thing is not cheap, how can a student afford it?" Shasha raises this question.

Bai Yaqing just smiled and didn't speak, turned on the computer she brought with her, connected to the system of the police station, and called up the information of Xiaoyi's best friend.

“……”

After reading it, Sasha finally understood why she could afford it.

Xiaoyi's best friend's parents are both out on business, and they are very busy all year round, and rarely go home to see her. In the past, her grandparents took care of her before high school, but after her grandparents died, she also had the ability to be independent, and her parents would also feel indebted to her, and they had no time and gave a lot of pocket money.

She usually rarely uses money, and it is estimated that she has saved it. With the financial strength of her family and the generosity of her parents, she can afford it.

"Wow, the invisible rich second generation!"

"I think it's okay."

After listening to what Bai Yaqing said, Sha Sha reluctantly squeezed out a smile.

Bai Yaqing's family background must be average! But for ordinary people, this is already a rich second generation, but the business of his parents is not as big as Bai's.

"What's wrong?"

"Nope! I think what you said is very right, very right! Sha Sha quickly changed to a praising smile.

"Shasha, we don't need to wear a mask to get along with each other, I know what you're thinking."

Sasha smiled embarrassedly.

………………

Bai Yaqing made a bold idea, this 'ghost' is actually Xiaoyi's best friend. Because she saw her best friend Xiaoyi being talked about with her own eyes, she was sad to see her, and she also watched her commit suicide.

She probably knew something, knew that Xiaoyi was wronged, so she came up with this solution......