Deep households pay social security.

Legal analysis: Deep-seated families and adult singles (including divorced individuals) must have settled in this city for three years, and can provide proof that they have paid personal income tax or social insurance in this city for 36 months or more before the date of purchase, before they can buy commercial housing. Non-deep households and adult singles (including divorced) continue to buy commercial housing in accordance with the provisions of the city on continuous payment of personal income tax or social insurance certificate for 5 years or more before the date of providing proof of purchase.

Legal basis: Article 12 of the Social Insurance Law of People's Republic of China (PRC), the employing unit shall pay the basic old-age insurance premium in proportion to the total wages of its employees as stipulated by the state and record it in the basic old-age insurance pooling fund. Employees shall pay the basic old-age insurance premium in accordance with the proportion of wages stipulated by the state and record it in their personal accounts. Individual industrial and commercial households without employees, part-time employees who have not participated in the basic old-age insurance in the employing unit and other flexible employees who have participated in the basic old-age insurance shall pay the basic old-age insurance premiums in accordance with state regulations and record them in the basic old-age insurance pooling fund and individual accounts respectively.