Legal analysis: inquiring about the history of houses (historical ownership of sold houses) refers to inquiring about the owner's name and the time of buying and selling, which is a trace of various transactions before the inquiry time.

Legal basis: Article 209 of the Civil Code of People's Republic of China (PRC) stipulates that the establishment, alteration, transfer and extinction of the real right of immovable property shall become effective after being registered according to law; Without registration, it will not take effect, except as otherwise provided by law.

Natural resources owned by the state according to law may not be registered.