How to calculate the social security of parents in Chongqing college entrance examination for 3 years?

Pay basic old-age insurance and basic medical insurance in Chongqing for 3 years or more. At least one of the children, candidates and their parents of migrant workers who are not registered in our city must hold a residence permit issued by the public security organ of our city for three years or more and within the validity period. Candidates must have been enrolled in ordinary high schools in our city for three consecutive years and actually studied. Parents must provide proof that they have been legally and stably employed and lived in Chongqing for three years or more (they must also provide materials such as paying basic old-age insurance and basic medical insurance in Chongqing for three years or more). Therefore, parents in Chongqing college entrance examination social security is paid in Chongqing for three years or more. The college entrance examination in different places is an important measure for the state to protect people's livelihood, promote education equity and safeguard the legitimate rights and interests of migrant workers and students.