What are the cultural achievements of Byzantium?

Byzantine culture has made great achievements in Christian theology; Although church literature prevails in literature, secular literature has also made great achievements. For example, the narrative poem "Frontier Warrior Di Guinness" (written by Constantine Cyrus, the poem praises the heroism of a frontier fighter who opposed the Arab invasion and suppressed the frontier kou, and traces of this narrative poem can also be seen in the Arabian literary masterpiece "One Thousand and One Nights"); Its architecture and art have also been innovated on the basis of ancient Greek tradition, and new styles and forms have emerged. For example, St. Sofia Cathedral is a typical representative of Byzantine architectural style (dome, widely used murals, etc. ), the art of painting also reached its peak during the Byzantine Renaissance.