Referring to the appearance of the Medicine Buddha, it is to save all sentient beings from sufferings of illnesses. The reality is to cure the source of illnesses of all sentient beings – chronic disease of fundamental ignorance, to save all sentient beings from the cycle of birth and death. So he is revered as the Great Physician King Buddha or the medicine king of virtuous way. This Buddha vows is inconceivable. If a person is seriously ill, showing sign of death, his family wholeheartedly make offerings and pray to the Medicine Buddha day and night, recite the Medicine Buddha sutra of original vows and merit 49 times, burn 49 lamps, worship and make offerings to Medicine Buddha for 49 days, recite the Buddha’s name, and recite his mantras, which can eliminate the root causes of all illnesses and can also eliminate disasters and prolong life, eliminate disasters and illnesses, and avoid the disaster of nine types of deaths. Medicine Buddha is the Great Physician King Buddha, who makes twelve vows to cure the source of all living beings’ diseases and to cure the chronic diseases of ignorance. It can also eliminate all calamities and prolong life.