Cui Liang's idea was simple: to use the terrain advantage of the canyon west of Gui Ning City to trap Yang Zhenshan in a flood.
This operation was not difficult. The water flow of the Ying River upstream was not swift, so blocking it was not a hard task, and the outlet of the Gui Ning City canyon happened to be the river course of the Ying River. The canyon's mouth was only a dozen or so yards wide; by sealing off this opening, the canyon would immediately become a lake.
When the time came, they could open the outlet again, and the river water filled in the canyon would instantly inundate a hundred miles around, turning the surroundings of Gui Ning City into a vast ocean.
Moreover, this operation was not difficult to carry out; a few thousand soldiers could complete it.
After coming up with this plan, Cui Liang himself couldn't help but get excited.
He felt this idea was brilliant!