The Audio

Liu Feng opened the file named "The Audio" and saw a thumbnail of an audio. He saw:

> waveform of a sound with some peaks and valleys.

> duration of 5 minutes and 23 seconds.

> name of "Call_2024-02-28_23:55:12".

He felt a shock and a curiosity. He recognized the name and the time. It was the name and the time of the last phone call that he had received from his mother. He remembered that his mother had called him that night, just a few minutes before the attack. He remembered that his mother had sounded happy and excited. He remembered that his mother had told him that she loved him and that she had something important to tell him. He remembered that his mother had said goodbye and hung up.

He wondered what his mother had wanted to tell him. He wondered if it had something to do with the project and the attack. He wondered if he could hear his mother's voice again.

He heard the system's voice in his head.

[Host, this is the audio of the last phone call that you received from your mother. It was recorded by your phone and saved on the USB flash drive. It shows what your mother said to you and what she wanted to tell you. It also shows what happened after she hung up. It is very touching and revealing. Do you want to listen to it?]

[Yes, I want to listen to it. Play it.]

[Okay, host. I will play it. Please listen carefully.]

Liu Feng clicked on the audio and listened to it. He heard:

> The audio started with a beep and a ringtone.

> His mother's voice answered the phone. She said: "Hello, Feng. It's me, mom. How are you?"

> His voice replied to the phone. He said: "Hi, mom. I'm fine. How are you? Where are you?"

> His mother's voice said: "I'm fine too. I'm at the lab. I'm working on the project. It's almost done. We're about to test it. It's very exciting."

> His voice said: "Wow, that's great. I'm happy for you. What is the project about? Can you tell me?"

> His mother's voice said: "Well, it's a secret. But I can tell you this. It's something very important and amazing. It's something that will change the world. It's something that will make you proud of us."

> His voice said: "Really? That sounds awesome. I'm already proud of you, mom. You and dad are the best. I love you."

> His mother's voice said: "I love you too, Feng. You are the best thing that ever happened to us. You are our son and our hope. You are our dream and our legacy. You are our everything."

> His voice said: "Mom, you're making me blush. You're too sweet. But thank you. Thank you for everything. Thank you for being my mom."

> His mother's voice said: "You're welcome, Feng. You're welcome for everything. You're welcome for being

> my son. And you know what? I have something to tell you. Something very important. Something that will make you happy."

> His voice said: "Really? What is it, mom? Tell me."

> His mother's voice said: "Well, it's about the project. It's about what we're doing and why we're doing it. It's about what we're going to do and how we're going to do it. It's about our plan and our goal. It's about our future and your future. It's about…"