"Yes, I'll get it for you!" The woman and the man looked at each other, hesitated and got up and went into the bedroom.

Zhang Qiqi and Li Chaonan looked at Chang Ping, not knowing why he was listening to music. However, he must have an idea when he proposed it, so he suppressed the doubts in his heart and didn't ask.

"This is my daughter's phone, the music is in it, and the song "Perfect World" is!" The woman said as she unlocked the lock on her phone and handed it to Chang Ping.

Chang Ping glanced at the woman, untied the earphone cable and clicked on the playback.

The beautiful melody sounded, Chang Ping listened quietly with his eyes closed, and the other four people looked at him.

The room was quiet and a little dull, and the four of them looked at Chang Ping without blinking. As time passed, Chang Ping gradually frowned, and his brows became deeper and deeper, looking painful.

Chang Ping pressed pause, took off the headphones and let out a sigh.

"What's wrong?" Li Chaonan asked with concern.

"I know why she killed herself!" Chang Ping looked at everyone and said.

"Why?" The woman asked eagerly.

"Does it have anything to do with this music?" Li Chaonan guessed.

"Well, it has to do with music." Chang Ping nodded. "Do you know about Black Sunday?"

"Heard!" Li Chaonan nodded. "Black Sunday, also known as the 'Song of Death,' was written by the Hungarian pianist Rurans Chasri, who himself committed suicide in 1968 because of the song, followed by an army officer, and then a series of suicides, which were later considered forbidden and disappeared from this world. Is this the tune? ”

"No, but it's similar to Black Sunday. The reason why "Black Sunday" can kill people is because there are psychological hints in its song, this song was written by Rurans Chasri to his ex-girlfriend, it happened to be Sunday, his girlfriend left him, he thought it was dark that day, so he named it "Black Sunday", but not only these, but also has a lot to do with his family background and living environment, so he can create such a sad song! Chang Ping shook his head and explained "Black Sunday" again, and at the same time, he also remembered how he felt when he listened to this song at that time, and he definitely didn't want to listen to it a second time after listening to it for the first time.

"Could it be that there are psychological hints in this piece as well?" Zhang Xingxing asked.

"Well, it's not strong, but if you listen to it all the time, something will definitely happen!" Chang Ping nodded.

"My good daughter, why should she listen to this tune!" The woman broke down and wept bitterly. The man looked at the mobile phone on the coffee table and was about to fall when he picked it up, but his arm was grabbed by Chang Ping.

"Don't fall yet, although there is a problem with the song, the talent who made this song is the root of the problem, so we have to take it back and study it!" Chang Ping looked at the man and explained.

"Okay, let's find out who made this piece and bring him to justice!" The man put down his phone and said angrily.

"Of course, that's what we do!" Zhang picked up his phone and put it in his pocket.

"Has your daughter been in contact with anyone lately?" Chang Ping asked.

"No, if there were, she would tell us!" The man shook his head.

"Well, if you think of anything else, you can contact us. We won't bother! Chang Ping got up and said.

"Okay, we'll be fully cooperative!" The man and woman stood up and looked at the three of them and said.

Zhang started to say goodbye to the couple and went out of the room.

"Can I listen to it now?" Zhang Xingqi took out his mobile phone and looked at Chang Ping and asked, very curious about this song that can make people commit suicide.

"Yes!" Chang Ping nodded.

"Captain, don't bring headphones for me to listen to!" Li Chaonan said.

"Okay, then get in the car and listen to it!" Zhang started to put the mobile phone in his pocket again, and the three of them walked to the production stoppage.

The soft sound of the piano sounded, and after listening to it for a few seconds, the mood calmed down, and then the sound of the piano changed, and began to slowly mourn, and this emotion became more and more intense, and when it was about to suffocate, it suddenly slowed down, as if a bright road was paved in front of him, as long as he took a step forward, he could relieve all the current troubles and enter that perfect world.

"It's so depressing, no wonder you're frowning!" Li Chaonan turned off his phone and frowned and complained.

"Okay, you definitely haven't heard Black Sunday, and if you listen to that tune, it's going to drive you even more crazy!" Chang Ping said with a faint smile.

"Have you heard?" Li Chaonan asked suspiciously.

"Well, I heard that!" Chang Ping nodded.

"Isn't there no more? Where did you hear that? Zhang Xing looked at Chang Ping.

"I got it abroad by some means!" Chang Ping replied.

"Is there still any?" Zhang Qiqi asked.

"No, it was ruined after listening to it at the time!" Chang Ping shook his head.

"Hey, it's a pity!" Zhang started with a look of regret, and Li Chaonan nodded in agreement.

"The most urgent thing now is to find the source of this song, if it has been spread, it will definitely have a very bad impact!" Chang Ping diverted the topic and turned to the case again.

"Click on the details of that song, there should be a source!" Li Chaonan picked up his phone and checked it.

"Is there one?" Chang Ping asked expectantly.

"Yes, it's Bluetooth!" After reading it, Li Chaonan handed the phone to Chang Ping.

"Sure enough! So let's just say that this song hasn't been posted online yet, so we're going to step up our efforts to find this communicator right away! Chang Ping said after reading it.

"Let's ask Xiao Lizi first, how they checked out!" Zhang Xingxing took out his mobile phone and dialed the phone, asked a few words and hung up the phone.

"They've gone back, let's go back too, and put together all the evidence collected!" Zhang started and stepped on the accelerator as he spoke.

In the office, Chang Ping listened to the survey recording, and the other four people studied the song "Perfect World" again.

"Hey!" After listening to the recording, he took off his headphones and sighed.

"What's wrong?" Li Chaonan asked suspiciously.

"There is a cause and effect, and the girl's suicide is also related to the environment in which she grew up!" Chang Ping's tone was a little heavy. A few people looked at themselves and said, "The girl is like a bird in a cage, delicious and drinkable, but not free." Her parents have high expectations for her and are also strict, it can be said that she has been taking the arranged path since she was a child, and it can be seen from her mother that she can turn on her mobile phone, she doesn't even have her own secrets! ”

"From her father's words, 'I will tell them all my friends,' she couldn't make friends if she wanted to! How can you not be depressed if you live under such a discipline for a long time? She doesn't want to be a good baby, she wants to have her own life, but she can't! ”

That's why she chose to commit suicide, and under the hint of the song, she has achieved liberation through this means! Poor kid! ”

The other four people were very depressed after listening to Chang Ping's analysis.

Jingle bell, the phone on the desk rang, interrupting the contemplation of several people, and Xiao Lizi picked up the phone.

"Okay, got it, we'll go right over!" After listening, he hung up the phone directly. "Someone jumped off the building in the Silver Star Building!"

"Let's go!" Zhang Qiqi finished speaking and walked out of the office.....