"The biggest threat the fire spiritual essence poses is its ability to invade the organisms directly to destroy their vitality. But as it expands, it's consuming its own energy at the same time. Like I said, this abnormality will not go on forever. It will die down. If we can provide it with a large amount of substance so that it will burn out faster than it explodes out, we might be about to stop it from spreading out further."
Gu Yu's explanation was relatively abstract, but the concept was rather straightforward.
Needless to say, the energy the fire spiritual essence spent on devouring a blade of grass, a tree, or a whole forest would definitely differ from one to the next. They could use that to try "artificially feeding" it, so that it would be satiated ahead of schedule.
"..."
The group of people pondered over the suggestion in silence and it was quite some time before the professor asked, "Was that your speculation or a deduction based on facts?"