https://gangzzang.tistory.com/entry/%EC%9D%B4%ED%81%B4%EB%A6%BD%EC%8A%A4-%EA%B0%9C%EB%B0%9C%ED%99%98%EA%B2%BD-UTF8-%EC%9D%B8%EC%BD%94%EB%94%A9-%EC%84%A4%EC%A0%95
