After reading McLuhan and Fiore’s “The Medium is the Massage”, I understand the connection between people and medium is that human beings create technology with wisdom and technology is the extension of human beings, reflecting all human beings from different places. After reading, I was inspired to create this poster, because I think photos are the media of photographers, who extend time and space through photos. Photography is also the extension of light, because photography itself is the art of light and shadow. The photographer takes photos of the time, space and light at the moment of pressing the shutter in the passing time, and finally presents the photo, which is the extension of that moment, because the photo can be preserved for a long time, while all the elements of the photo cannot be preserved.