Which solar term is the frozen spring cover in the Spring and Autumn Period?

Generally speaking, spring lasts until March, and it freezes to 10 in autumn.

In other words, spring is generally around the vernal equinox, and autumn freezing is generally before the Millennium. 1, "spring covering" means that when the temperature is just getting warmer in spring, don't take off your thick clothes too early, but cover the point, so that the heat generation and cooling regulation of the body and the environmental temperature in winter are in a relatively balanced state.

Otherwise, it is too early to wear thin clothes because it is warm and cold in early spring and the temperature changes greatly. Once the temperature drops, the body will find it difficult to adapt and its resistance will decrease. In addition, bacteria and viruses are active in spring, which is more likely to induce various respiratory diseases and infectious diseases in spring.