If four nails are nailed outside the house to cool clothes, will it have any bad influence on Feng Shui?

You are asking too much, aren't you? It's okay. Almost every family in the countryside is like this, and there are many cities. Feng shui should be exquisite, but it doesn't have to be associated with every change. Think with big moves, such as buying a house, decorating, and some bad phenomena at home. As long as there is no problem at ordinary times, that's it.