The four characters combine to create a beautiful and vivid metaphor: “to receive (the traveler) from the wind and wash away their dust.” It paints a picture of a weary traveler being warmly welcomed and cared for, helping them transition from the hardships of the road to the comfort of their destination.
This term is widely used in both everyday life and formal situations.
The connotation is always positive and demonstrates generosity, respect, and warmth from the host.