Xiangyun yarn (Ranunculus japonicus) has always been known as noble fabrics "soft gold" and "fiber queen" and is the best quality silk.Xiangyun yarn is a traditional process of dyeing with juice from a natural plant, dioscorea cirrhosa. To make this magic fabric, the drying process needs to complete dozens of processes such as "three washes, nine cooks, eighteen dries". Its production is closely related to natural elements such as sunlight, soil, vegetation and river water. Uncontrolled climatic conditions will directly affect the production cycle and output of Xiangyun yarn. According to calculations, it takes up to a year to make a fragrant cloud yarn. The yarn is unique in manufacturing process, and has the characteristics of being cool and pleasant, light and soft, quick-drying in case of water, not easy to wrinkle, rich in body bones, degerming, repelling insects, and having health-care effect on skin. Matters needing attention in the maintenance of Xiangyun yarn: 1.Avoid hooking, pulling and sticking oil when wearing clothes. When collecting, should hang preservation; Keep the closet dry and do not put camphor balls (otherwise it will become brittle); Do not spray deodorant, perfume, etc. 2. Xiangyun yarn is a kind of natural fiber fabric, its color will fade naturally after repeated washing, which is a normal phenomenon. Hand washing with clear water is preferred, and it is not suitable to soak for a long time. Rub gently. Hand washing with special silk detergent or clear water is sufficient. 3. Use squeezing to wash, avoid wringing, squeeze to remove water, hang dry in the shade or hang dry in the shade in half, do not expose to the sun and do not dry. 4. The iron should not be pressed directly against the surface of the gauze to avoid aurora discoloring.