Original sentence: A 20th century Bulgarian story relates the first martenizi to the 7th century Battle of Ongal between the Bulgar Khan Asparuh and the Byzantines, which resulted in a decisive Bulgars victory.After the victory, the Bulgar Khan sent eagles with white threads to announce the victory to his main camp.Some specific features of the ritual, especially tying the twisted white and red woolen threads, are a result of centuries-old tradition and suggest Thracian (paleo-Balkan) Hellenic or even Roman origins
Edited sentence: A Bulgarian legend relates the first martenizi to the 7th century Battle of Ongal between the Bulgarian Khan Asparuh and the Byzantines, which resulted in a decisive Bulgarian victory.After the victory, the Bulgarian Khan sent eagles with white threads to announce the victory to his main camp.Some specific features of the ritual, especially tying the twisted white and red woolen threads, are a result of centuries-old tradition and suggest Thracian (paleo-Balkan) origins commingled with ancient Bulgarian roots