What they crave for is not flesh and blood, but the "life force" of all creatures, attacking every living being that intrudes into the Extinction Domain.
After absorbing these "nutrients", Boundary Flower made significant progress in the Ghost Spirit's domain, and plenty of nutrients allowed it to grow more roots. These roots stretched out from the ground and spread into the surrounding void, just like before.
If anyone were to witness this, they would most likely feel their scalp tingle: within tens of miles, countless roots were densely stacked on top of each other, reaching out from the underground only to disappear into the void.
Like a terrifying, massive spider web.
Only a strong cultivator could see that the roots followed some cracks in the vacuum, not because the roots opened these cracks, but because these cracks already existed, leading to unknown places.
