Time is a long stream, how to divide the past from the present, and how to define it? The body is crammed between the rivers, and it is stationed in the boundary of wandering, fuzzy and unstable. The past and the present are branched and fused with each other, trying to find the perception and context in the history. The installation is like a swaying channel,expanding and contracting through the dynamic mechanical action, as if it is constantly arguing and repositioning the critical field.