The Shou Empire is a large island on the western coast of Golarion. It is marked by its many central mountains and long winding coastline. Most of the inhabitants live in coastal cities, but there are some inland making use of the many rivers coming down from the mountains. Shou is ran by an Emporer and managed by various retainers and clans that own land.
The Shou Empire has a thin veil to the Astral Sea. Not any particular plane but the Sea itself. This has caused some Humans to change into Gith. The thin veil also leads to a lot of thought about ancestors, where people end up after death, and respect for the gods in general. It also has influenced native monsters and let in creatures from the Astral Seal. Leading to a lot of otherworldly and ethereal monsters.