1. Open the branch holding company APP and click the second-hand house menu on the home page.
2. Choose your favorite house on the second-hand house page and enter the details page.
3. Click the "Online Consultation" button at the bottom of the page to communicate the details of the house purchase with the owner or broker.
4. If you are satisfied with the housing, you can click the "Entrust Now" button to submit the purchase demand.
5. Fill in the purchase information in the pop-up page, including the housing area, expected price, purchase method, etc.
6. Click the "Submit" button to complete the house entrustment. After that, the system will automatically recommend the right house according to your needs.
Please note that this is only a rough step, and the actual operation may be different according to the specific situation. It is recommended to know the relevant policies and procedures in detail and consult professionals before buying a house.