1. The online query method is as follows: 1. Log in to the website link of Xi Housing Security and Housing Authority, and click "Service" in the upper left corner to enter the service center. 2. Enter the "online inquiry" and make relevant inquiries according to specific needs. Note: It takes some time to put a new contract on record, usually 1 week (normal working day) ... 2. You can also bring relevant information directly to Xi 'an Housing Management Bureau (Xi 'an West Street) to apply for inquiry. Extended information: real estate bureau inquiry: I want to inquire about the accurate personal real estate license information (including: the name of the owner or the title certificate number).