They work hard under the scorching sun or in the cold wind. They dress simply, often wearing hard hats and wear-resistant work clothes. Their hands are covered with calluses, and their skin becomes dark and rough due to long-term exposure to wind and sun. With the expectation of improving their family life, they leave their hometowns and use their sweat and efforts to contribute to urban construction. They pay silently and are an indispensable and important force for urban development.
