What is paper reinforced mud and what is its use?

Paper reinforcement: white paper reinforcement or grass paper reinforcement should be soaked, mashed and cleaned with water before use; Cover paper ribs should be finely ground by machine. Straw and wheat straw should be tough, dry and free of impurities, and the length should not be greater than 30 mm. Straw and wheat straw should be soaked in lime slurry. Toilet paper used to be used, but now cement paper bags are mostly used instead, because the fiber toughness of cement paper bags is better.