In the ancient human race, the four-character mantra was spread all over the world: life, old age, sickness, and death! All cultivators in the world seek longevity, fear aging, avoid death, and avoid disasters and diseases. , can refine the spirits and sicknesses of the world into pills, and seize the good fortune. Facing the miserable world and the incomplete way, Meng Xuan fell into deep thought. Should he be alone, or enlighten all living beings?