Water supply and drainage workers eat at the construction site and hire several aunts to cook. Cooking a large pot of rice doesn't need to taste too good to ensure hygiene and health. Steamed bread can be ordered from outside and will be ready in the morning. With less money, migrant workers can eat enough. Stir-fry three or four dishes at noon to get a unified wholesale from the vegetable wholesale market. You can also eat noodles or stir-fry at night.