The work is a paper made video composed of digital image and physical material that delves into the essence of moving image. It divided the digital video into the film ratio of 24-frame-per-second. Through the transforming process in printing and scanning, the re-composed video is in between movement and stillness, virtual and concrete, digital and material. The contrasts have thus been related to the Oriental philosophy of Taoism, "one body with two sides" (Ying and Yang). With the video, I was trying to visualize the abstract natural law which denies description. Tao is empty yet inexhaustible, hidden but always present, a way of life yet not a locatable truth. darkness within darkness seeks, in the same way, to be comprises of the very contrast between the established (material) and the abstract (digital) through revealing the invisible time in image.