《黄帝内经·灵枢·阴阳二十五人》
对时令的适应是，能耐受秋冬的寒凉，不能耐受春夏的温热，春夏易感受邪气而患病。
能秋冬，不能春夏，春夏感而病生。
In terms of seasonal adaptation, they can tolerate the cold of autumn and winter, but not the heat of spring and summer. They are prone to evil spirits and diseases in spring and summer.