According to Mr. Li's textual research in the genealogy and origin of Taiji in ancient and modern times, Sanfeng died in the second year of Tianshun in Ming Dynasty, namely 1458, with a life span of 2 12 years. From the analysis of a large number of data, it is confirmed that Zhang Sanfeng's annual examination of birth and death is really 2 12 years old, which is also very rare, and longevity is rare in history, so it is amazing.