https://blog.faceutil.com/2017/03/26/msx-%ec%9d%b4-%ec%96%bc-%ec%bf%b5%ed%9b%84-yie-ar-kung-fu-%e3%82%a4%e3%82%a2%e3%83%ab%e3%82%ab%e3%83%b3%e3%83%95-%e3%81%af/