C605

Red Phosphorus never heard this weird sound.

It wasn't until the latter half of the night that he heard it faintly.

"That's the sound."

Ding Duo couldn't help but swallow his saliva, indicating that the sound was especially terrifying.

The red phosphorus frowned; apparently he heard it too.

Because he heard it, the CIA frowned.

This was because he hadn't heard of the previous two times