"Ahem, little friend, you may not be aware! The Upper Realm is full of experts, and while they are indeed strong, they focus far too much on cultivation. Their mastery in the way of arrays… is somewhat lacking! Things like teleportation arrays are quite troublesome to construct."
The implication was that there were not many formation masters around. Therefore, complex, fully constructed teleportation arrays were even scarcer, and people were unwilling to waste them here.
"However, judging by your tone… could it be that you are a formation master?"
Chapter 192