Is Zheng Su's calligraphy collectible?

It has collection value. According to relevant public information, Zheng Su's calligraphy refers to the calligraphy works of famous Chinese calligraphers Zheng Banqiao and Su Shi, which are rare in the world and expensive, and have high collection value. Zheng Banqiao was a famous calligrapher in the late Ming and early Qing Dynasties. His calligraphy works are famous for their elegance, agility, dexterity and smooth charm. Su Shi is a famous writer and calligrapher in the Northern Song Dynasty, and his calligraphy art also has high collection value.