Cameras capture the view from one side of the tower and LEDs recreate the image on the other side, and so on. I wonder how they deal with varying viewpoints. LEDs aimed at different heights?
Here’s another question: you can’t really see artificial light during the day, so the effect is going to work only at night. But at night, since it’s a 450m-tall tower, what the cameras will see is a dark sky. How are LEDs going to reproduce darkness? And hide the light coming from inside the offices? Maybe they’re counting on the night sky being a soft orange glow, from so many streetlights filtered through a polluted sky.