I will travel for half a month. What if the washed clothes don't work?

If you want to go to a hot climate, you can take some clothes that are easy to dry.

There are many places in the market where you can buy quick-drying clothes. After washing, you can wring out the water by hand, usually the next morning. You can also consider bringing some chiffon clothes, which are convenient to wash and dry quickly.

If you go to a cold place, you can wash less coats, fleece, sweaters and jeans, but wash shirts and underwear quickly.

If the hotel you just checked in doesn't provide coin-operated washing machine and dryer, try to clean and dry it before dinner, and the next day is basically enough.

If you are in a hurry, you might as well consciously choose a hotel with self-service laundry facilities every four or five days. Some inns have several washing machines and dryers. You can use the evening time to wash clothes, which are usually dry when you leave.