Southern China immigrants from Chang, Chuan and Hakka, had first contacts with the indigenous people on the island

  Most of the first wave immigrants were from the southern coast of the mainland, like Fucho, Chuancho and Changcho. There were frequent fights and clashes between clans, sometimes even within a clan, for the sake of territory-markings. The indigenous people used to live on the plain; but when the Chuancho and Changcho immigrants came, they forced the natives to move to the hills. Later, when the Hakka immigrants came, they further pushed the natives to move to the mountains. The mountain lands were not suited for crop cultivations; so when the deer moved to the mountains as a result of incessant hunting of the new plain habitants, the deer became one of the important food sources to the natives.