Problem: Using the Haikang video plug-in, the plug-in fails to start in Google Chrome (this Haikang plug-in is really a scam)
Reason:
Because the Haikang plug-in does not support high-level Google, emmmmmmmmmmmmm
Solution:
The first:
使用低版本谷歌浏览器（94版本以下）The second type:
1: 在谷歌浏览器中地址栏输入 chrome://flags/ ，
2: 搜索secure，找到 Allow invalid certificates for resources loaded from localhost（启用它）
3: 找到Block insecure private network requests.（禁用它）
Baidu can't find this problem. The list of questions on Haikang's official website is not recorded, I hope it will be useful to other students
