Lin Xi disappeared on the Fourth Floor of the World Tree Secret Realm.
According to the rules of the World Tree Secret Realm, apart from the Great Mystic Realm every five floors, all other floors could only be entered once.
Having come out of the Fourth Floor, Linda could not enter it again if he wanted to; he could only grind monsters in the Great Mystic Realm or in ordinary secret realms outside the World Tree.
Chapter 23