After the unit buys out, it pays social security by itself.

Flexible employees refer to those who are employed in flexible forms such as part-time, temporary and flexible work, including individual industrial and commercial households without employees, freelancers, part-time employees, lawyers, accountants, auditors, dentists and other professional and technical personnel, as well as personnel belonging to social organizations of other institutions. After the unit bought out, he paid social security by himself, no longer being an employee of the unit, but independently bearing social security expenses as an individual industrial and commercial household or freelancer.