Shanghai small town insurance to urban insurance?

Shanghai small town insurance because there is no personal pension savings account, so the amount of savings in the personal pension account is equal to 0 after the conversion to urban insurance, in addition to the original small town social security records of the number of years of contributions, to be discounted, the small town social insurance contribution base is fixed, is the minimum contribution base of the urban insurance, that is, the level of the wage of 60%, converted to the urban insurance of the old age pension after the number of years of contribution is discounted 60%, that is, the number of years of contribution is 10 years. The contribution period for small town pension insurance is 10 years, and the contribution period after conversion to city insurance is 6 years.