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Group 1 - The core viewpoint of the article discusses the procedures and regulations for flexible employment personnel to participate in social insurance, including eligibility, types of insurance, payment ratios, and implications of payment interruptions [1][26]. Group 2 - The scope of flexible employment personnel includes individuals aged 16 and above who have not reached the legal retirement age, self-employed individuals, non-full-time workers not covered by basic pension or medical insurance, and other flexible employment personnel [3][29]. Group 3 - Flexible employment personnel can participate in basic pension and medical insurance after completing employment registration and social insurance registration, with specific payment ratios outlined in the relevant regulations [9][33]. Group 4 - If flexible employment personnel experience a payment interruption, they cannot make retroactive payments to increase their contribution years, as per the regulations [15][37]. Group 5 - Interrupting payments in the city will not affect the accumulation of contribution years, as the personal account balance will continue to accrue interest, and contributions from different regions can be combined when meeting pension benefit conditions [43][40]. Group 6 - Upon finding a new job, individuals currently enrolled in flexible employment insurance must first complete the exit procedures to avoid complications with their new employer's social insurance registration [21][49].