Prince Henry's territory happens to be on one side of Nine Caves Lake, comprising 30% as per the division made by the Great Wood Ancestor back in the day.
At that time, the area around Nine Caves Lake was extremely barren, and the population of the Wood Dynasty was mainly concentrated near the capital.
Later, as the area continued to develop, Nine Caves Lake became a land of abundant fish and grains, and Prince Henry's family became the richest vassal king.
In fact, from the perspective of Owen Bertram, a traversing cultivator, it was clear that at this point, Prince Henry either had to voluntarily exchange his fertile land for poorer territory or start a rebellion.
Wind and Rain Mountain was located to the southwest of Nine Caves Lake. A market town named "Little Merchant Gathering" had formed at the foot of the mountain, relying on the Broken-Star Sect. Bat Taoist had built a Taoist temple outside the small town.