Caoshu, also known as "grass script," is a style of Chinese calligraphy that emphasizes speed and fluidity. It is characterized by its cursive and free-flowing strokes, making it appear more spontaneous than other calligraphic forms. This style is often used for artistic expression rather than for formal writing. Originating during the Han Dynasty, Caoshu evolved from earlier scripts and became popular among calligraphers for its dynamic and expressive qualities. While it can be challenging to read, it is appreciated for its aesthetic beauty and is often used in artworks, seals, and personal inscriptions.