The boys in this image study Chinese calligraphy. Calligraphy is painted with brush and ink and can be produced in five different scripts. It is both an art form and a language. It originated with the ancient seal script found in ancient China on ceremonial bronze vessels and on oracle bones. Chinese writing systems entered Korea during the Three Kingdoms period (57 BCE–668 CE) probably assisted by Buddhist monks, who were proficient in the reading and writing of texts. Even after the Korean (hangul) system of writing was developed in 1446, scholars continued to read and write using Chinese calligraphy.