When the original intention
was to develop the WeChat public account, the messages sent by the WeChat public platform to the public account could only be sent to the public IP and port. Then my computer for development and my public network server are not in the same world, so I can't do the backend. In the end, it caused me to debug very XXX. Looking at the experience of others, I found that there are 3 ways to choose first.
Ngrok
VPN
SSH reverse tunnel