Shanghai social security card number starts with m.

What you want to ask is what does the Shanghai social security card number M mean at the beginning? On behalf of the province Official website introduced that the mobile phone version of the inquiry fence community, the social security card number is the citizen's ID number, and the letter M in front represents the province. Hu Xiaoyi, Vice Minister of Ministry of Human Resources and Social Security, introduced the adoption of national unified standards for social security cards at the press conference of the State Council Office on August 30th.