One of the most powerful formation that even the many elites from the Six Great Powers dares not face was actually dissipated by a wave of Death Monarch hand
Maybe this is the small matter.
Sasha when executing orders on behalf of Death Monarch always said to the enemies she killed that the reason why Death Monarch did not personally take action because to him, some things are small matters.
To others, big matters might actually only be a small matter in the eye of "that person"
Like that archipelago in the Arabian Sea and the formation that protected Pandemonium. All of this probably only a small matter that does not weight that much in Death Monarch mind
And like always, every action of Death Monarch would be analyzed by all the people of the world.
Why would Death Monarch destroy the formation? Why would he not just order people to open the formation for him?