I was truly amazed when we drove through the city of Beijing that people would hang their clothes outside their windows. They had clothes lines out their windows, and usually no balcony. They could be on the 6th floor or the 20th floor. High rises. It didn't matter.
Our tour guide, Stone, told us that many people have washers, but not dryers and they had to hang their clothes outside. Some were fortunate if their had a combination washer/dryer. I can't imagine life without both.