The era of fragmentation is rooted in the running behavior of fragmentation. The lens is like our other pair of eyes, instead of watching the world. By 3d Scanning the device, the computer successively took thousands of photos and restored a virtual one based on the coordinate information. But this virtual What does the proposed shell have to do with me? In addition to the Cartesian coordinate system and a huge map of thousands of photos, this virtual What can I prove again?