It is estimated that most of them died of cardiovascular diseases. It was the Manchu who brought pork to the table of the people in Shanhaiguan pass. Qing emperors also liked to eat pork, especially meat oil. Judging from the dietary characteristics of the Qing emperor, it is estimated that the Qing emperor should have more or less cardiovascular and cerebrovascular diseases, and winter is the season with frequent strokes and sudden cardiac death.