Said to be originated from Sinji. Each Sacred Treasure possesses a unique ability and a heraldry of each clan in Sinji.
Only seven out of eight has been revealed.
As far as the story goes, only three out of the eight has shown to have a personality Flame Dragon Blade, Ma Ryong Sword and Heavenly Bow. The first time two Sacred Treasures talk to each other was Flame Dragon Blade and Ma Ryong Sword when Flame Dragon Blade was trying to protect Han Bi Kwang.