https://blog.wongcw.com/2021/11/25/%e6%a0%b8%e8%81%9a%e8%ae%8a%e5%88%9d%e5%89%b5%e4%bc%81%e6%a5%adpulsar-fusion%e8%a9%a6%e5%b0%84%e9%83%a8%e5%88%86%e7%94%b1%e5%a1%91%e8%86%a0%e5%bb%a2%e6%96%99%e9%a9%85%e5%8b%95%e7%9a%84%e7%81%ab/