Li Ming didn't want to be seen as an external force imposing change. By making the first move himself, he could prevent them from viewing themselves as a unified entity, thereby avoiding the necessity of dealing with them as a whole.
He wanted any semblance of order and humanity to be under his control, not the control of a collective that only interacted with him. This would only make the things he wanted to do even more troublesome.
Moreover, if the gathering place was not closed off and people could move freely in and out, then his entry might be as inconspicuous as meeting a stranger in a neighborhood. No one would be necessarily inclined to treat him differently, allowing him easy access...
While heading here, Li Ming had already planned his approach. Determined, he quickly climbed the stairs to the fifth floor, encountering a guard halfway up the fourth floor.
He raised an eyebrow and paused.