在蘭嶼達悟族的傳說裡，曾經有位漁人在大魚聚集的地方（Jikazezyongan），遇到一位面貌相像，語言相似的異國人，叫 Si-Vakag。 漁人問這位異國朋友，從他們所在到蘭嶼要多久，朋友說約 3 小時。 漁人再問他，從這裡到他的島要多久，Si-Vakag 回他，從這裡到他家所在的島要 5 個小時。 Long says a folk tale among Tao people of Orchid Island of Taiwan: Long time ago, a Tao fisherman, Si-Jiaong, encountered a stranger who yet looked so much alike his people and wielded a similar language in the middle of the ocean. The stranger was called Si-Vakag. Si-Jiaong asked Si-Vakag, how long did it take from where they were sailing to Orchid Island. Si-Vakag said 3 hrs only. Si-Jiaong asked again, how long did it take from where they were sailing back to Si-Vakag’s sland. Si-Vakag replied 5 hrs.