https://www.hkfin-jetso.com/blog/%e9%ab%98%e9%81%94%ef%bc%84500-cash-dollars%ef%bd%9c%e7%b2%be%e9%81%b8%e8%b2%a8%e5%93%81%e4%bd%8e%e8%87%b35%e6%8a%98%ef%bd%9c%e6%81%86%e7%94%9f%e4%bf%a1%e7%94%a8%e5%8d%a1%e8%b1%90%e6%be%a4%e8%b3%bc/