Xinghai Relic Sand Iron.
According to the book "Heaven and Earth Strange Formation" from Heavenly Academy years ago, only a few words were left regarding this material.
This substance originates from the deep sea and is a treasure among Heaven and Earth Treasures.
If one could obtain two or three maces of it and integrate it into a weapon, the weapon would possess the ability to cut through metal and jade.
Nowadays in this world, only the Heavenly Slaughter Sword among the Ten Great Swords uses an entire block of Xinghai Relic Sand Iron.
Thus, the brilliance of this sword's blade is indeed the greatest among the ten.
It possesses a remarkable ability: anyone who masters this sword, even ordinary Jianghu Martial Artists, can instantly become an unparalleled expert.
However, there is one thing; the legendary Ten Great Swords are often regarded as ominous.
Longing is a Poison, Heavenly Slaughter obstructs the owner.
Whomever holds it finds no peace.
