The birth year of Master Padmasambhava, if according to the saying that "Sakyamuni was born 8 years (or 5 years) after the Nirvana", the time of Buddha's Nirvana that is relatively accepted by scholars from Han, Japan, India and other countries is 543 BC. Based on this calculation, Padmasambhava should have been born in 479 BC or 482 BC. By the time he entered Tibet in 763 AD, Padmasambhava's life span was about 1242 or 1245 years old. When he left Tibet in 801 AD, his life span was about 1280 or 1283 years old. Of course, it is difficult for ordinary people to believe that a person has lived for more than a thousand years, but it is credible in the eyes of many religious believers. There is also a legend in Han that Peng Zu lived for more than 800 years.