1 month. At present, the first time you apply for insurance, you can experience the insurance service for one month for free through the previous exercise, and the guarantee services you can enjoy are different according to the different exercise steps. Every month, the premium will be recalculated according to the exercise situation of last month. The more steps that meet the standard, the lower the premium you need to pay.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.