In this lesson, we will take a look at how to say "good night" in Korean. The most common way is to say jaljayo (in Hangul: 잘자요). Just like any language, the Korean language has numerous words and phrases for saying farewell to someone.
"Korean alphabet. For over a millennium, Korean was written with adapted Chinese characters called hanja, complemented by phonetic systems like hyangchal, gugyeol, and idu. In the 15th century, a national writing system called hangul was commissioned by Sejong the Great, but it only came into widespread use in the 20th century, because of the yangban aristocracy's preference for hanja."