“When a bird flies by a monitor, and I observer it from my iPhone and press the shooting bottom from the other side of the earth. The bird was real, and I did shoot it without my attendance. Does it mean it is not photography?" (Kuo, I-Chen) Kuo questions the existence by the absence of artist! “After pressing the bottom, the shooting moment dies immediately, but if the artist has never been the shooting place, does it mean death doesn’t happen?”