Destroying a chiliocosm domain was actually very easy. Forget about Lin Feng, even One-star Supremacies like Supremacy Round Heart and Supremacy Magnum could easily do it.
However, reducing a chiliocosm domain to ashes without leaving a trace after destroying it was not something an ordinary Supremacy could do. At the very least, a One-star Supremacy could not do it, nor could an ordinary Two-star Supremacy.
Even if Lin Feng was to destroy a chiliocosm domain now, it was impossible for him to leave no trace at all and reduce everything into ashes. That was impossible, unless he devoured the entire chiliocosm domain.
If this empty region in front of him was really once a chiliocosm domain in the past, it would be too terrifying. There were even two terrifying types of rules entrenched in it.