Cheongyang Khiun ( Hon-koet-ngi : 靑陽郡/靑陽郡 ) he Hon-koet Chungcheong Nam-tho ke yit-chak khiun . Chung mien-chit 479.57 phin-fong kung-li , 2003-ngien ngin-khieu tha?t-to 37,194-ngin.