Cia-Cia ( `` Bahasa Ciacia '' ) , also known as Buton ( ese ) , is an Austronesian language spoken principally around the town of Bau-Bau on the southern tip of Buton Island off the southeast coast of Sulawesi in Indonesia .
The Cia-Cia language ( Hangul : 바하사 찌아찌아 , Roman : Bahasa Ciacia ) , also known as South Buton ( ese ) , is an Austronesian language spoken principally around the town of Bau-Bau on the southern tip of Buton Island off the southeast coast of Sulawesi in Indonesia .