This paper proposes the Orchid-Batan regional study framework and attempts to investigate the interaction between archeology and ethnography of these two places in terms of mythical legends and oral histories. With historical scrutiny and cultural interpretation, this paper attempts to construct a new way to understand the history, ethnic relationship and cultural correlation of these two places. Additionally, this paper offers an opportunity to reconstruct and improve the cross-border ethnic relationship and cultural system between Orchid Island, Taiwan and Batanes Islands, the Philippines.