https://qooah.com/2011/08/16/defy-%e5%be%97%e5%88%b0%e5%ae%98%e6%96%b9%e8%aa%8d%e8%ad%89%e4%b8%a6%e6%94%be%e5%87%ba%e6%9c%80%e7%b5%82%e8%a6%8f%e6%a0%bc/