https://www.hkfin-jetso.com/blog/%e9%80%81%e6%af%8f%e6%9c%88%e9%ab%98%e9%81%942gb%e6%95%b8%e6%93%9a%ef%bc%81dbs-%e4%bf%a1%e7%94%a8%e5%8d%a1-x-3%e9%a6%99%e6%b8%af%e4%b8%8a%e5%8f%b0%e5%84%aa%e6%83%a0/