How to Ping An Intranet IP address from the Internet through a router

The TP-link router comes with a ping tool, which I used to think is a chicken fault, because I am used to using the ping tool of Windows command line, which can be in the local network, it is convenient to ping the IP addresses of this website or different networks.

Recently, when I was at home and needed to control the company's routers, I found a problem: I was unable to ping the company's internal network IP through the command line of my home computer windows.

So I thought of the router's Network diagnosis function and found this wonderful use. I can use it to ping the IP address in the local network through the router from the Internet.