Does anyone have a clear idea of how this is supposed to look like?
HR used it to fend off the Golden Wheel monk. It involved hiding behind rocks, and moving the rocks around to change the formation.
If the Wu brothers could move the rocks to hide from the monk, couldn't he remove the rocks from the formation?
Chen Ying used a dirt formation to slow down LMC. She ended up going around it because the formation only covered the front of the house. Given, that's the easiest way to get around it, but can't she just knock down whatever's in her path if she should choose to take on the formation?
On Peach Blossom Island. It's famous for trapping ZBT for over a decade, and people can't just come and go. But is is really that difficult? Can't you just climb on the trees and go in a straight line to wherever you want to go?
And again, OYF burnt down the Lu manor, no one else seemed to have decided to just destroy it, but instead decide to run through it and get lost.