There are three spots that Sam is targeting at the moment and all three of them have some critical nodes for many formations of the Divine Formation Mountain.
And all three of these spots are way too far away from one another. So, if something really bad happens to them all at the same time, there is not enough manpower with enough knowledge to deal with it.
So, the young masters who are in the main mansion trying to witness all of the chaos Sam is about to bring will have to make a move whether they want to or not.
He will force them to come and deal with the situation.
As if on cue, as soon as he thought to this point the puppets started attacking the nodes. Along with that, the special traps Sam set up were completely activated.