Who used the whole crab inkstone?

Ancient literati used a whole crab inkstone. The traditional crab inkstone is one of Four Treasures of the Study, usually made of stone or ceramics, and shaped like a crab. The people who used a whole crab inkstone were all ancient literati, including Bai Juyi, a famous poet in the Tang Dynasty, and Su Dongpo, a writer in the Song Dynasty. In their artistic creation such as painting and calligraphy, they often need tools such as inkstone and writing brush, so they will choose Four Treasures of the Study with unique inkstone shape and excellent quality. The unique shape and exquisite craftsmanship of the crab inkstone not only have practical value, but also become works of art and collectibles.