You probably wouldn't expect which city in the south feels the coldest. It's not in the Southwest Plateau, not in a small mountain town, and it's not below zero ten degrees. It's—Changsha. Northeast friends laugh at me: "It's only a few degrees there, what's so cold?" I used to think the same. 2℃, 3℃, how exaggerated can it be? But as soon as I got off the plane, I chickened out. It's not that it's cold; it's penetrating. The wind isn't strong, but the air is humid. The temperature isn't low, but the bones feel cold. If the north is "physical attack";