The south lacked water, so the population had to concentrate in places that had water. The topography of the north is complex, with many mountains and hills rising up, and there is plenty of water, so the villages tended to spread out.
這也有水源上的理由，南部缺水，因此聚落需要集中於有水的地方，北部地形複雜、山丘起伏，有山有水，因此成為散村。