韓流

the spread of Korean cultural products (TV dramas, pop music etc) to other countries / Korean Wave

Korean Wave, aka Hallyu (the increase in international interest in South Korea and its popular culture since the 1990s)

Han, one of the Seven Hero States of the Warring States 戰國七雄|战国七雄 / Korea from the fall of the Joseon dynasty in 1897 / Korea, esp. South Korea 大韓民國|大韩民国 / surname Han

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade