Okay before I answer your question you gotta know the Tang Dynasty the Tang Dynasty or also known as Tang Empire was an imperial ( relating to an empire ) dynasty In power from 618 to 906 A.D. Your answer could be next XD hint hint had to do with the invention of painting yes painting
Painting increased the availability of literature fact At least 48,000 poems were written by some 2,200 authors. Poetry was expected to encourage high morals ideals and served as a means of self-expression. - So yo answers is painting who knew XD
Hoped this helped