Elegant Chinese porcelain brushes, known as Bitong.
Its cylindrical shape and white porcelain are decorated with intricate cobalt blue drawings under nail polish.
The inscriptions and images painted on the body of the brush door tell a fascinating story.
The text, written in traditional calligraphy, is a partial transposition of one of the most famous works of Chinese literature, the Ode in the red cliff of Su Shi.
The images show a detailed landscape with characters.
The piece is signed at the base with the brand (apocryphal) of the emperor Kangxi of the Qing dynasty, which reigned from 1662 to 1722.