Hongning Base City, Nine Towers.

The ninth floor of the Nine Towers is filled with facilities unearthed from ancient civilizations. Among them are not only the trial room and the challenge room, but also the gravity room that Xu Zong had been longing for.

"Beep!"

A beam of light swept across from above, followed by a faint mechanical sound. The door opened, and Xu Zong walked into the gravity room.