Sanitation workers don't have a lounge, and you can often see them sitting there to rest or sleeping against the building. In this group of sanitation workers, there are many middle-aged and elderly people who are nearing retirement or have retired. At the age when they should live in peace, they picked up brooms to clean the city for their own lives. According to the statistics of sanitation workers, 50% and 60% of the elderly are normal, and few are under 40. If it is distributed according to the wages of the labor force, the wages of sanitation workers are completely out of proportion to their efforts. In the survey, the wages of sanitation workers are mostly around 2 K. This is completely incompatible with the physical labor and wages of "a sanitation team has to walk around the equator more than twice a year".