Soul Purification Demon Sword.
Among the unknown Divine Weapons, there are only a few swords, and apart from the Holy Sword Huiyao which has been suppressed for over two thousand years, the Soul Purification Demon Sword is considered the most famous of the sword weapons.
Because it complements the Hidden Sword Assassin, although the Assassin Organization updates a brand new version almost every hundred years, no matter how it changes, there will always be a leader possessing the Soul Purification Demon Sword behind the Hidden Sword Assassin.
Mr. Iron knows about this sword, knows about the Hidden Sword Assassin, knows about the Assassin Organization, because of his experience in the Youyun Ta Bai Army.
Actually, it has nothing to do with him, just a General who had countless achievements in the Ta Bai Army died at the hands of an Assassin.
It is said that he provoked someone important in the Imperial Court and was hired by assassins to kill him.
