It was well known that the larger the collective individual, the greater its impact, and the more difficult it would be to operate it. This applies to what was before Chen Heng's eyes.
At this moment, what Chen Heng was reviving was not an individual life form, nor was it an area, but an entire world. He was reversing time, bringing the entire world to go back in time so as to bring back the previous world.
This kind of behavior could be done in theory, but in practice, no one would do it.
If he simply wanted to save the world, he actually didn't need to go through so much trouble. With his divine ability, it wasn't difficult to save a world. As long as there were traces of it, there would be a trace of life left.
With this trace of life, it was enough to do many things. However, what Chen Heng wanted was not simply to save the world but also the creatures that had once attached themselves to it.