In the morning, I suddenly found a water mist head on the window.

Natural phenomena. This situation may be because the water mist on the window condenses into the shape of a human head under certain circumstances. This phenomenon is more common in wet weather or when the window surface temperature is quite different from the air temperature. Some people also use the patterns formed by water mist on the windows for artistic creation. They can use various tools to create different shapes of water mist patterns on the windows, such as people, animals, plants and so on.