 Historically it is believed that the Arakanese emperor has invaded the south-eastern region of the current Bangladesh.Since then the region was ruled under the Burmese emperor and Marma ethnic groups were established from that period.Their cultural traits are connected to their ancestral heritage, including dress (which is called "thumbui"—the lower part, and "angi"—the upper part), food (mostly spicy, sour, and hot), writing (Burmese script), traditional songs and musical instruments (for example, "kappya", "jjea", and "kharra").