Zhang Boying's achievements in calligraphy are not only reflected in his artistic creation, but more importantly, his promotion and contribution to the cursive art. Under his influence, cursive script gradually developed from a practical writing method to a unique art form. His calligraphy theory and creative practice had a far-reaching influence on later calligraphers and laid the foundation for the development of China's calligraphy art.
Generally speaking, Zhang Boying, as the "ancestor of cursive script", is not only because of his artistic achievements in cursive script, but also because of his great contribution to the art of calligraphy in China. His calligraphy art and calligraphy thought still have a far-reaching influence on China's calligraphy art today. The above information is only a brief introduction. For more information about Zhang Boying, I suggest consulting relevant calligraphy history books.