He not only roamed through purgatory in order to save the soul of his deceased mother, but vowed to hold a rite on the 15th day of the seventh lunar month, at which he beseeched the Three Treasures of Buddhism to save the souls of all sentient beings from hell.
「我界」指人界，「他界」則是概稱所有人所不知的神秘世界。「他界」有好幾處，像「泰山府君」掌管的泰山，相傳便是人死後的往生之地。