https://www.hkfin-jetso.com/blog/%e6%9c%80%e9%ab%985%ef%b9%aa%e5%9b%9e%e8%b4%88%ef%bc%81%e4%b8%ad%e9%8a%80%e4%bf%a1%e7%94%a8%e5%8d%a1-x-%e8%b1%90%e6%be%a4-fortress%e5%84%aa%e6%83%a0/