2, Autumn, means that the summer to cool, the diet should also make adjustments; we all know that the twenty-four seasons is the Chinese ancestors themselves based on a long period of observation and summed up a set of excellent civilization rich in Chinese culture treasure, it is the ancient ancestors to comply with the agricultural time, through the observation of celestial operation, cognitive a year (year) in the time (season), the climate, climate and other patterns of change in the formation of the knowledge of the system, corresponding to the time of the season, the time of the day, the time and the weather, and so on. system, corresponding to the festival should eat what kind of food is best.