I Almost Froze to Death While Cultivating Immortals, so I Had to Repair My Grave

Everyone in this world is cultivating immortality, but I am cultivating a grave alone. At the bottom of the ice-cracked valley, I relied on building walls for the dead to keep warm. Until I touched a black token, the ancestor's murmur came from inside: "Hold my key and inherit my tomb." I was forced to bury a dragon bone in my spine, and filled my head with ten thousand years of evil thoughts, turning it into a walking haunted house. In the sect's main hall, I was sentenced to exile at the border gate - "This son's path has been dangerous and he deserves to be buried in a mountain of corpses and a sea of blood." They don't know that this mass grave is what I'm waiting for. The evil spirits are my bricks, the demon souls are my tiles, and the souls of the dead on the battlefield are the best tomb guardians. When I built the first "Longting Sword Tomb" in Corpse Abyss in the North, the entire world of immortality suddenly realized: They exiled not criminals, but gravediggers.