What's the difference between first gear and second gear?

Legal analysis: social security payment is divided into four grades: the lowest grade (40%), the first grade (60%), the second grade (80%) and the third grade (100%). The difference is that low-grade social security contributions are low, and the balance of funds entering personal accounts is also small. When calculating the pension in the future, the average contribution index converted into the formula will be low, resulting in less pension, while the social security with high contribution ratio will receive higher pension than the low-grade social security.

Legal basis: Article 2 of the Social Insurance Law of People's Republic of China (PRC) The state establishes social insurance systems such as basic old-age insurance, basic medical insurance, industrial injury insurance, unemployment insurance, maternity insurance, etc., to protect citizens' right to get material help from the state and society according to law in case of old age, illness, industrial injury, unemployment and maternity.