You can shake the number after paying social security for five years.

The requirement of the lottery is to push forward from the date of participating in the lottery, and have a social security payment record for 60 consecutive months (the monthly payment cannot be broken, and it can be admitted that the application must be in the payment state when it is overdue within 3 months), and at the same time, it must have a tax payment record for 5 consecutive years (the tax payment record cannot be broken, that is, it is counted once a year).

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.