Why does Guangzhou Yaohao always remind employees that medical insurance is less than 24 months old?

Guangzhou Yaohao always reminds employees that they can only participate in Yaohao after 24 months of medical insurance.

According to the Measures for the Regulation and Management of the Total Number of Small and Medium-sized Passenger Cars in Guangzhou, the social security requirement of Guangzhou license plate lottery is that employees' social medical insurance has been paid in this city for 24 months in the last three years, and there is a record of paying employees' social medical insurance in this city in the last month. Have a household registration in this city, hold a valid identity document and a valid motor vehicle driver's license, are not eligible to apply for updating indicators, and may not use the incremental indicators obtained by the lottery within two years.