The dog days of 2022, an important solar term in hot summer, will kick off on July 16 and last until August 25th. This time period can be subdivided into three stages: initial, intermediate and final. The initial stage begins on July 16 and lasts until July 25th, followed by the intermediate stage, which lasts from July 26th to August 6th. Finally, August 15 to August 25 is the last period. During these 40 days, the temperature often reaches the peak of the year, so people need to be prepared for heatstroke prevention and cooling, especially for the summer heat during the first and middle days, we must pay attention to health protection.