There were many cultivation rooms inside, and those illuminated with a red light indicated occupancy, while green lights meant they were available for use.
Each cultivation room had a recess above it, and you just needed to place your token into the recess to enter.
By the way, a piece of advice for you; if you're not at the Heaven Rank, don't go above the 10th floor, otherwise you won't be able to handle it.
Having said this, the old man closed his eyes again and dozed off, while Su Chen walked towards the inside.
Upon entering, he found out that he wasn't the only cultivation enthusiast there.
Most of the lights were red, with only a very few green ones.
Su Chen did not choose a cultivation room here because it sounded like the first ten floors were for Martial Artists below the Heaven Rank to cultivate.
He was now a mid-stage Heaven Rank Martial Artist. Thus, he didn't want to use those below ten floors, and he proceeded to the higher floors.