A medicine vault. She walked inside and the first thing she saw were rows and columns of different kinds of medicines, pills, and plants for cultivation. The room was just as large as the first one Ruby entered. She recognized most of these medicines and plants at the forefront but there was no need for them so she didn't bother picking any of them.
Her sights were set forward so she kept moving.
After walking around the place for several minutes Ruby walked out of the room with a smile on her face, "This is just assurance it's not stealing," she muttered with a look of naughtiness.
She headed towards the next door on the right and pushed it open too.
Inside this room were artifacts of different kinds and grades.
Flying boats, small orbs, dimensional travel artifacts, gigantic human-like mechanisms, e.t.c.