https://blog.wongcw.com/2022/08/17/%e6%bf%80%e9%80%b2%e6%8a%95%e8%b3%87%e8%80%85elliott%e6%b8%85%e5%80%89%e8%bb%9f%e9%8a%80%e8%82%a1%e4%bb%bd%ef%bc%9a%e5%b0%8d%e5%ad%ab%e6%ad%a3%e7%be%a9%e5%a4%b1%e5%8e%bb%e4%bf%a1%e5%bf%83/