1. https://natapp.cn/login (mainland server, faster time to time domain to force replacement);
Buy free tunnel
Copy the tunnel ID: ******** 2cd7
Change the tunnel configuration
2. https://www.ngrok.cc/login.html (Hong Kong server free, slow, domain name does not replace);
Download Ngrok ( client download )
Editing tunnel
Copy and paste the tunnel ID to the client run the DOS command window
More than two sites only need to register log in to add channels to use for free.