https://blog.wongcw.com/2023/05/02/qlc%e5%b0%9a%e6%9c%aa%e6%99%ae%e5%8f%8ahlc%e5%8f%88%e4%be%86%e5%af%ab%e5%85%a5%e5%a3%bd%e5%91%bd%e5%a0%aa%e6%86%82/