写一个简单的频道定时推送和删除消息脚本 https://zsxwz.com/2023/08/20/%e5%86%99%e4%b8%80%e4%b8%aa%e7%ae%80%e5%8d%95%e7%9a%84%e9%a2%91%e9%81%93%e5%ae%9a%e6%97%b6%e6%8e%a8%e9%80%81%e5%92%8c%e5%88%a0%e9%99%a4%e6%b6%88%e6%81%af%e8%84%9a%e6%9c%ac/