60% of Korean words are derived from Chinese loan words. Learning to read and write Chinese characters is not necessary for most Korean students given that they are used infrequently in modern Korean texts but learning the sound and meaning of the characters will help you improve your vocabulary similar to how students of English can benefit from learning Latin and Greek roots.

한수 한, the Chinese people, Chinese language (14)
門外漢 문외한 outsider
惡漢 악한 crook
惡漢 악한 rascal
惡漢 악한 ruffian
惡漢 악한 villain
痴漢癡漢 치한 molester
漢江 한강 Han river
漢拏山 한라산 Halla mountain
漢文 한문 Chinese writing, Chinese classics
漢字 한자 Chinese character