"In fact, moving a stone from the ground onto the city wall requires no less effort than throwing stones to kill enemies.
"But when you throw stones to kill enemies, you use the strength within your body, and your strength is limited.
"Moving stones onto the city wall is equivalent to storing strength in the stones in advance.
"The more stones you move onto the city wall, the more reserve strength you have, and the more strength you can unleash in battle."
"This is the core of defense warfare, gentlemen, moving stones to a higher ground beforehand, which is—" Cornelius paused, "building momentum."
The commissioned officers were baffled, with many only understanding one word, "stones."
"Stone is just a metaphor, gentlemen," Cornelius patted the battlements beside him, "preparing stones is building momentum, collecting gunpowder is building momentum, storing grain is building momentum, constructing fortifications, and digging trenches are also building momentum."
