What does interest in social security mean versus the individual principal and interest therein

Hello. Medical insurance principal and interest amount is the total amount of even the principal and interest, generally refers to the integrated fund, that is, the enterprise payment into the integrated part. Individual principal and interest amount is the total amount of personal account with principal and interest, refers to the individual part of the contribution plus the enterprise payment into the personal account part. The interest amount in the principal and interest amount is transferred to the account management funds, the individual principal and interest amount of the interest amount is divided into the individual account of the insured employees.