https://purengom.com/2018/08/24/t2-%ec%b9%a9%ec%9d%b4-%eb%93%a4%ec%96%b4%ea%b0%84-%eb%a7%a5%ec%9d%98-smc-%eb%a6%ac%ec%85%8b-%ec%a0%88%ec%b0%a8-%eb%a7%a5%eb%b6%81%ed%94%84%eb%a1%9c-2018%ed%98%95-%ec%95%84%ec%9d%b4%eb%a7%a5/