Poor health, go to the south in hot weather and go to the north in winter. In the south, spleen is the main nutrient, while in the north, lung is the main nutrient. The cold in the north is a physical attack, so it is good to improve the equipment defense. The cold in the south is a magic attack, so we should improve the magic resistance. The climate characteristics and living habits of the north and the south are different, and the concept and method of health preservation are also fundamentally different.