Xuanzhi, a kind of Chinese paper, is made through being washed, boiled, dried in the sun, picked, pounded and cut. Only after all of this and through the craftsmen's skilled hands, can the paper's purity be attained. This three-year process by the devoted craftsmen enables Xuanzhi to become an immortal legend. So, here let's see how they overcome difficulties step by step and produce the story of how paper lasted more than a thousand years.