https://blog.faceutil.com/2017/10/17/1942-%ec%b6%94%ec%96%b5%ec%9d%98-%ec%98%a4%eb%9d%bd%ec%8b%a4-%eb%b9%84%ed%96%89%ea%b8%b0-%ec%8a%88%ed%8c%85-%ea%b2%8c%ec%9e%84-1942-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-%e3%88%89/