War is an extremely complicated thing.

The hundreds of thousands front line army is like an extremely precise and fine gauge pointer, the massive empire behind it consisting of an unknown amount of moving gears.

Just for the transport of several hundred sets of heaven supporting giant-like Stone Catapult Carts and over a thousand large scaled crossbow carts within the designated time to the city, countless workshops had to work overtime, countless craftsmens following orders, countless troops following deployment instructions, and there was also an unknown amount of battles stopping enemy military attacks that happened.

It was the same for Great Mang’s side.

To turn the Black Phosphorus and Ghost Oil Wood Purgatory Mountain had accumulated for close to a hundred years into Devil Flame Flakes that could stick to tangible matter, moreover in a way that was outside the eyes of Yunqin’s scouting troops and spies, deliver them to this city, moreover make a flame web that seemed to cover this entire city underground, this was an extremely complicated matter. It was unknown just how much transferring of personnel was needed, how many conflicts erupted.

The time a provisions fleet arrived at its destination, the time it needed to move through their designated...