https://news.idea-show.com/post/%e7%86%8a%e6%84%9bdrawdown%e5%89%b5%e6%84%8f%e5%bd%b1%e9%9f%b3%e8%b3%bd%e9%96%8b%e8%b7%91%ef%bc%8c%e8%b3%ba%e7%8d%8e%e9%87%91%e5%85%bc%e5%8f%8d%e8%bd%89%e5%9c%b0%e7%90%83%e6%9a%96%e5%8c%96%e6%9c%89/