I once firmly believed that there is nothing new under the sun in this world. Until that afternoon, in the dusty old attic, my fingertips touched the dusty documentary. The paper is brittle and heavy, as if it holds many unspoken secrets. When I turned the first page, I was shocked to realize that I had pried open a box deliberately buried by time - it turns out that the world we are familiar with is just an illusion on the surface, and the real shadow has been dormant in the corner, silently recording everything.