Wang Feng turned his attention to a certain trashy universe. It barely propped up any black holes. The main reason for this was the civilization within it. There was a cultivation civilization that callously called itself the higher realm. They parasitized their nearby dimensions, and they attacked every other civilization they met, calling genociding and robbing "making use of immortal opportunities".
The only saving grace was that they avoided dimensions with no spiritual energy like a plague, considering them inferior. Those subdimensions were able to create and use single-point black holes.
There was no saving these greedy cultivators. Wang Feng knew their type well. Therefore, he hatched a plan. That particular universe wasn't adverse to interference. Timelines corrected themselves in a less dramatic manner. The changes were localized where they were. Thus, he was able to do what he was about to do.