The most important function is to remind.

1. Orchid Grass is a catchy song that everyone knows. The melody is simple and beautiful, and it is easy to remember.

2 Reminder function: Whenever the music of Orchid Grass comes to mind, it is the time when the garbage truck collects garbage. It reminds residents to throw away garbage, forming a fixed conditioned reflex.

3. The third role is also more critical, it has the role of educating future generations of the motherland. For example, whenever my son is disobedient and doesn’t eat, I wait for the garbage truck to come and put orchids in it. song, I told my son that if you don’t obey and eat, the garbage truck will take you away, so whenever the orchid grass comes to mind, my son will eat obediently, which is very effective.