In this series, the artist fixed the Polaroid instant film photographes onto Pinctada maxima shell by Emulsion Lifts. As a protective shell, the shell is often exsited much long than their lives and their soft bodies. It is both life's shelter and its anchor of burden.. The image on soft film and the hard shell suggest the thinking of balance between eternity and the present, lightness and heaviness, fragility and stubbornness, freedom and security, etc.