Moved in a mess, the young dancers expressed their awe of the sanitation workers with a unique gesture, thanking them for their silent dedication to the urban environment, which caused the audience to reflect and sing. Run away at the sight of tears. Hip-hop is also an art. It is a good work of art to impress people and publicize the correct value orientation. It is really everyone's responsibility to love reputation and care for the environment. These uncles and aunts gave us the first beautiful environment when we left home, and we also did something for them. I salute you too. Thank you for your hard work.