Do freelancers in Hefei need to change their social security cards?

Flexible employment is transferred to employee social security without changing social security cards. Now the social security card is universal and does not need to be re-applied. Policies vary from place to place. At that time, the social security department did not need to change, nor could it change. The social security card number shall be uniformly formulated by the state. Just like an ID card, one person, one number, is unique. Whether you pay it yourself or the enterprise gives it to you, it is the same.