Since the 1980s, market-oriented reforms have enabled the realization of the market value of human capital, and the rate of return on education for residents has increased from a low level to about 10%. Important reasons: With the improvement of education, high-education workers are no longer scarce, education returns have gradually stabilized, and the salary ratio of high- and low-education workers has no longer rise. In recent years, the phenomenon of wage convergence has appeared, and the gap between different education incomes is narrowing. In line with this text:. ['Educational level is directly proportional to income.', 'Educational level has improved, and the salary ratio of different education has decreased steadily.', 'The human capital market continues to adjust so that the impact of educational factors on income is gradually reduced.', 'The guarantee of universal education and fair education has narrowed the income distribution gap.']