legal ground
Article 25 of the Notary Law of People's Republic of China (PRC)
A natural person, legal person or other organization that applies for notarization may submit it to the notary office of its domicile, habitual residence, place of behavior or place where the fact occurred.
The application for notarization of real estate shall be submitted to the notary office where the real estate is located; Notarization involving entrustment, declaration, gift and will of real estate may be governed by the provisions of the preceding paragraph.
Article 27, paragraph 1
The parties applying for notarization shall truthfully explain the relevant information about the matters applying for notarization to the notarization institution, and provide authentic, legal and sufficient proof materials; If the supporting materials provided are not sufficient, the notary office may request to supplement them.