"Class solidification" refers to the phenomenon that the mobility between social classes decreases and the gap between people of different classes in social status, income, education and power widens, which leads to the intensification of social stratification, the damage of social fairness and justice and the intensification of social contradictions. Breaking the "class solidification" needs to start with improving education level, improving employment opportunities and strengthening social security.

Breaking the "class solidification" will bring the following effects: on the one hand, it can promote social fairness and justice, improve social efficiency and innovation; On the other hand, it may also lead to the waste and mismatch of talents, making outstanding talents unable to give full play to their potential, while some mediocre or incompetent people occupy important positions and resources.