The designer spent 3 years decoding and encoding the illusion pattern named Moiré. Finally, she summed up 33 kinds of generating mechanisms for moire patterns and concluded more than 3600 pattern forms, which makes accidental and variable moire patterns to be controlled and used by designers(details are shown from the second link). This work proposes a special resource-saving interactive mode for sustainability , which can dynamically display patterns by using the principle of illusion, that is, the shortages of human visual perception and relative motion. The whole process does not contain any electronic components as well as avoiding the traditional multi-layer color paint that cause pollution. The bag extends from a physical existence into an ‘Interactive bag experience’.