What's the significance of Labor Day?

First, you can go to the nursing home to chat with the elderly, help them wash clothes, wash their feet and other meaningful things, and comfort them;

Second, help the librarians to organize books, clean the library, and provide students with a quiet and tidy learning environment;

Third, help sanitation workers clean up street garbage and make small placards to remind everyone that "it is everyone's responsibility to protect the environment";