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.
Each and every one of these can be awaken for greater power, there are two stage of awakening, the first one is normal awakening, and the later is true awakening. A normal awakening will let the user use some of its power, while a true awakening allows for full access of its power.
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.