With paper as the carrier, the abstract sunlight will be transformed into the physical form. The vague things are transformed into figurative forms through another medium, which is reflected in the works of Ching-Ya’s. When watching the works of Ching-Ya Li, it is recommended to take the process of keeping sunlight on paper as the premise to watch, and then enjoy the works. In the video process, you can clearly know how Ching-Ya uses water and paper as a guide to keep sunlight. When displaying the works, it is not only the works themselves that are full of abstractness, but also the solid sunlight has a concrete shadow under the light.