"Even if they're based in a city, their primary base of operations must be beyond the 'River of Oblivion'," Lei Rui said quietly. "No matter how fast they are, it would take at least ten days to make it from outside the river to here. If they know we've destroyed the Life Nest, it will be over ten days before reinforcements could possibly arrive. We should have enough time to destroy the remaining three 'Life Nests' and depart the area."