Beijing can buy a house by checking social security.

There are four ways to inquire whether social security has been handled for five years: holding my ID card or social security card to the counters or self-service machines of social security centers in various districts, inquiring through the online service platform of Beijing social insurance, inquiring through WeChat, and calling the consultation telephone number of Beijing Social Security Center 12333.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.