Dogs are very loyal animals, from ancient times to the present. It's like a field dog in our own country, and it's smarter and more loyal than any other. You don't have to teach him, the dog will understand!
In the city of Anyang, Henan, an Internet friend who had bought a field dog a few days earlier was still relatively small and wanted to feed himself to become familiar with the environment and to talk about the home. But after a couple of days, the dog learned to see it. Every time he went out, the dog stood at his door and watched. How clever!
How can he know the door? It's probably the genes in the dog's bones. It's born to know that it's a nursing home for humans. So don't look down on field dogs, they're really no worse than foreign dogs! They're better suited for home care!