New Urban Poverty: Refers to the population in the cities that are mainly poor due to the transformation of various systems and economic structures in the process of China's transition from a planned economy to a market economy. Which of the following does not belong to the new urban poverty? ['Lagged workers with backward skills.', 'Poor college students who cannot afford tuition.', 'Mining workers unemployed due to depletion of resources.', 'Elderly without children and no income.']