"Bo Yeyuan, I just carefully examined the terrain of the ancient city. It's in a depression within this mountain, perhaps due to past earthquakes, making its elevation the lowest."
"Hmm."
"And there's a moat around the ancient city. This river nurtures and protects the ancient city. But it could also destroy it."
Bo Yeyuan stroked her fingers, as if he knew what she was thinking, his eyes deep and silent.
"Since the entire city's underground is planted with explosives, this battle can't be fought head-on. The ancient city's main gate is tightly closed, easy to defend but hard to attack. We could dig a tunnel under the walls and let the water rush in and flood the city. Water would bring disaster, destroy their military supplies, and force Ling Ran to lead his people out of the city. If he stubbornly defends the city, water will bring disease and plague..." Li Qiyu could not continue; she certainly didn't want to waste resources and lives and hoped for a peaceful resolution.
