Can serving the people be done at home?

As long as you can do something to serve the people, it doesn’t matter whether it is possible or not. You are truly serving the people. Hanging it at home reminds you to think about the people when doing things, and it also encourages yourself. Will, when everyone comes to your home, they will praise you for serving the people sincerely and not just for fun. So if you think you should put up a slogan of serving the people, no one would object.