Studu on the legal system for social credit 并列题名：Studu on the legal system for social credit Study on the legal system of retirement Research on the legal system of rural social security Studies on the legal system of social insurance funds Study on the legal system of house takings Study on the legal system of trust taxation 并列题名：Research on the legal system of rural social security 并列题名：Studies on the legal system of social insurance funds a study on the development mode of social credit system