Seasonal climate traditional Chinese medicine

Professor Hao Wanshan said in "Lecture Room": The qi in spring is extended, such as transporting the nutrition of plants to branches and leaves and roots; In summer, the air is rising. At this time, the roots of plants no longer grow, only the parts on the ground grow. Autumn rest for restraint exercise, animals and plants desperately collect nutrients to prepare for winter; In winter, the air drops, and everything is hidden deep. I am going to do a new round of operation next spring; On the last day of summer 18, plants bear fruit and animals get pregnant. At this time, the climate is hot and humid, and the rise and fall, restraint and stretching of qi are balanced. This period is also called long summer.

According to these five conditions of qi, the ancients used five materials to express it: Chunmu; Summer-fire; Autumn-gold; Water in winter; Long summer-soil.