What are the names of the two pieces of wood that press rice paper when writing calligraphy?

Paperweights. Ancient literati often put small bronzes and jade articles on the table to enjoy. Because they all carry a certain weight, people will press paper or books with their hands while enjoying them. Over time, they have developed into a learning tool-a ruler. Ancient paperweights mostly used three-dimensional shapes of rabbits, horses, sheep, deer, toads and other animals, which were small in area and heavy in weight and made of jade, ceramics, copper and crystal. During the Ming and Qing Dynasties, famous painters and painters came forth in large numbers, which greatly promoted the production and use of stationery for study. The materials and shapes of paperweights have also changed. In addition to copper and jade, stones, rosewood and ebony are added, which are mostly rectangular in shape. Therefore, paperweights are often called paperweights and balances.