578돌 한글날..."한글의 소중함 되새겨요" / YTN YTN 0 6 10.09 17:33 https://www.youtube.com/watch?v=FD9TMb-ekRo + 3 https://www.youtube.com/feeds/videos.xml?channel_id=UChlgI3UHCOnwUGzWz… + 2 578돌 한글날..."한글의 소중함 되새겨요" / YTN