Sitting and lying in front of the window, the thunderstorm in the afternoon glides across the window, leaving a sliding mark, clouds chasing in the sky, through the refraction of the window, appreciate the sky and nature in creation. The three-dimensional brushstrokes are used to create the trajectory of the movement of the picture, like the vitality of rain on the glass surface. When it rains, people are in a hurry and compact time. The image is also moving and static, like time and space temporarily stored in the painting.