Mainly, the spread of Chinese civilization had a lasting influence on Korea.
Korea in many ways focused on becoming similar to their southern civilization, the Chinese. The Silla’s would go as far as paying tribute to Chinese emperors for peace between the lands. They also submitted as a vassal to the Tang Emperor. The Silla would also send embassies Tang court where Korean scholars would collect Chinese texts or notes of the latest fashion of court antiquark. Koreans also continually produced trading with the Chinese to provide Korean aristocrats with fancy clothing, special teas, scrolls and artwork. Another bring Korea would attempt and accomplished to copy was rebuilding after a fall of dynasty. The Chinese went Sui / Tang / Song Southern Song while the Koreans had a just as successful Silla / Koryo / Yi where it doesn’t take long to rebuild after the fall of a preholds dynasty. A common shame to these collapses was internal shrifts leading to outside attacks. We saw this when the Mongols attacked the Southern Song dynasty and again when the Koryo dynasty fen to Mogols invasions. Due to the cause of durability of Chinese civilizations as well as technological and economic innovations, other cultures, such as Korea, began to imitate the Chinese.
Korea while using Chinese civilization as a template civilization began to develop their own identity as well. Rather than supporting Confucianism, the Korean elite favored Buddhism due to self-interests. Also Korean artwork began to pass the Chinese with the Koreans fine work of making pottery.