Duck herders all had their own "realms of power." The area south of Sanyi belonged to the herders of Fengyuan of Taichung County, and they would also drive their up there in the fall.
因為趕鴨人家各有各的「勢力範圍」，三義以南的歸豐原、台中等地的養鴨人，他們也會在秋天時一路趕鴨上來。