https://blog.wongcw.com/2021/09/03/%e5%af%b6%e9%a6%ac%e6%ac%b2%e5%80%9fneue-klasse%e6%96%b0%e5%b9%b3%e5%8f%b0%e9%81%94%e6%88%90%e5%88%b02030%e5%b9%b4%e7%9a%84%e7%a2%b3%e6%8e%92%e6%94%be%e6%b8%9b%e5%8d%8a%e7%9b%ae%e6%a8%99/