What does it mean that the social security card returned 84 yuan of money

Social security card will return the amount of money each month: social security card back to the money is the individual part of your medical insurance contributions, and in accordance with national regulations unit contribution part of the amount of money transferred to the individual account of medical insurance. There are two types of social security contributions: individual contributions and unit contributions. Normally, when you contribute to the social security fund in your own name, you can only contribute to the pension and medical insurance parts of the social security.