Immortal cultivators who failed to cross the tribulation lost their souls to reincarnation and fell into the netherworld to become "soul-crossers"; Mengpo soup is divided into nine grades, and the best grade can reshape the soul's memory and trigger the three-life stone to reveal the cause and effect of the past life; deep in the underworld is a "reincarnation sword tomb", and the sword soul of the sword tomb can cut off the shackles of heaven, at the cost of sacrificing the soul-crosser's thousand years of cultivation.
