How many days before the new employee of Midea Property joins the company?

It depends on the situation. According to the relevant national requirements, the company must pay social security for employees within 30 days of their employment, otherwise it does not meet the requirements, that is, the time limit for new employees to purchase social security is 30 days. According to this regulation, combined with the characteristics that the Social Security Bureau can usually operate the social security system before 15, basically all companies limit the social security payment for new employees to 15, that is, they pay social security in the month before 15, and begin to pay social security in the month after 15.