Legal analysis: In popular urban areas such as 1, Haikou, Sanya and Qionghai, families who are not registered in this province need to provide proof that at least one family member has paid personal income tax or social insurance in this province for 60 months or more (only 24 months in some areas). 2. Houses built in Wuzhishan, Baoting, Qiongzhong and Baisha, four central ecological core areas, can only be sold to families in this city and county. 3. In addition to the above areas (such as Danzhou and Lingshui). ), families who are not registered in this province are required to provide proof of personal income tax or social insurance payment for at least one family member who has been in this province for 24 months or more.

Legal basis: Article 5 of the Civil Law of People's Republic of China (PRC) stipulates that civil subjects should follow the principle of voluntariness and establish, change and terminate civil legal relations according to their own wishes.