First, the dryer is more portable. First of all, we know that clothes dryers come into people's lives with learning machines. In the 1970s and 1980s, clothes dryers had entered people's lives, but only dry cleaners had this function at that time, but for many years. The function of the washing machine has been expanding, and it has entered the homes of ordinary people together with the dryer. However, compared with the traditional sun drying, the dryer is absolutely portable and unlimited. But the drying of the sun depends especially on the weather, and weather factors have a great influence on the drying of the sun.
Second, the permeability mentioned above. Although we should consider it from another aspect, that is, the way of drying machines and sun drying is definitely traditional, and the popularity of sun drying is higher. Although people's washing machines at home now have the function of dryer, few people can use this function, and they are still using the traditional drying method, sun drying.
Third, the sun is healthier. Finally, and most importantly, it is a health medicine dried by the sun. The mechanical drying we use now is healthier. Because the sun contains ultraviolet rays, the sterilization rate of ultraviolet rays to bacteria is relatively high. Mechanical drying, however, is only carried out when the moisture in the clothes is dried, and some bacteria are not deeply killed. Moreover, many bacteria will remain on clothes, so we still generally think that sun exposure is safer.