C212 Three Thousand Meters High

What no one expected was …

"Hiss, hiss, hiss, hiss..." The ear-piercing sound of a wave of sound waves fluctuating was heard.

Many people subconsciously looked towards the source of the voice.

It was a big screen.

Located in the center of a shopping mall on the first floor of the World Trade Organization, there was a large screen that specialized in advertising. Usually