To the east is the Canghai Sea, to the west is the quicksand, to the north is Juemo Desert, and to the south is the Yangtze River. This is the world of Yong.
Yan has tens of thousands of cavalry, galloping thousands of miles, which is useful in field battles but not conducive to attacking fortresses.
Chu has the dangers of the Yangtze River, rich water towns, and the most wealth in the world, but its soldiers are not accustomed to land warfare.
Xia lived on the plateau of the Western Region, taking trade routes as his lifeblood, using thinness as his edge, and died in a deceitful way.
