Why is the scenery beautiful after the snow?

In fact, the city is full of lights at night. We can use these lights to express snow, because the lights are not as simple as sunlight, and the lights in the city will emit different colors and the angles are changing, so these provide rich possibilities for expressing blood. Look at this work, the whole picture is blue, and it was shot in the moonlight. Due to the high color temperature of the light in the moonlight, the white snow in the photo appears gray-blue.