The policy for foreigners with permanent residency in China to purchase real estate is basically the same as that for Chinese citizens.
Generally speaking, they can purchase property in China, but they need to comply with local property policies and relevant laws and regulations. For example, certain purchase restrictions may need to be met, such as in some cities, there may be requirements for the number of properties purchased, the social security or tax records of the buyers, and so on.
Specific policies may vary in different regions. In some popular cities, home purchase policies may be stricter.
For example, in Beijing, foreigners need to provide proof that they have worked in China for more than one year to buy a house. In Shanghai, there may be regulations regarding their marital status, social security or personal income tax payments.
Although the right of permanent residence provides some convenience for foreigners to buy houses in China, their qualifications and conditions for buying houses need to be determined according to specific regional policies, laws and regulations.