Tunnel continues Fu's formal and conceptual exploration of the liminal space among the physical, virtual, and metaphysical realms. It is inspired from one particular experience going through a small tunnel from my travel to Arizona. Throughout the journey, there were five windows increasing in size. Each one reveals to the traveler a little bit more of the other side of landscape till the traveler finally finds oneself completely walks into the picture. Taking it as a metaphor, I am interested in the process of the revealed and unrevealed expectation and a parallelization to human understanding of the bigger physical, spiritual, and metaphysical realm.