Why we dry clothes by sunlight The reasons of we dry clothes outside by sunlight, first we believe that sunlight has its special power to kill those bacteria and other germs.by this way clothes will smell fresh and feel clean, that's why some of those Chinese family have a drying machine but never use it. Second is technical factor, I think people still have doubts about those multifunctional machines, it seems more likely to have problems. So a washing machine with no drying function is simple and convenient. Last one, the economical factors, the price of a good brand washing machine with drying function in China is more than 800.00USD,compare to ordinary people's income, and considering ours a little complex steps ( as I know, according to my circle, when we going to wash clothes , we have at least two steps, step one: separate light and dark colored clothes, step two: separate personal underwear and outfit, other steps may including separate different materials.), it may cause to waste too much water and power, then we have to pay more cost, it maybe not a smart choice for a good housekeeping, since the sunlight is free. But things are changing, for instance, city like Shanghai, it has over 100 raining days(around 120days) a year, and recently it's getting more complicated, it has more and more days that you can't tell the weather is cloudy or smoggy. We will need those dry machines in the coming future whether we like or not.