In the labor stage, there is no temporary concept in the Contract Law, only a probation period, and no probation period is four years. There is no probation period, and you are a full-time staff member. You have the right to ask for equal pay for equal work, and the salary shall not be lower than the local minimum wage. If the obligatory unit paying social insurance fails to pay, it may complain to the Labor Bureau or unilaterally terminate the labor contract.
The characteristics of the labor contract system and the requirement of equal pay for equal work, the unit should handle all kinds of social insurance for those who have labor relations with the unit, whether they sign a labor contract with the unit or not.