Where can I book a mobile global diamond card and how can I exchange it for a free breakfast in the hotel?

Mobile Global Diamond Card can book hotels online and redeem free breakfast by the following steps.

1. Log in to official website, Qunar.com and select the "Hotel Reservation" page.

2. Enter the name or address of the hotel you want to stay in in the search box, select the check-in date and check-out date, and then click the "Search" button.

3. Find the hotel you want to stay in in the search results page, and then click the "Book" button.

4. Select your check-in number and room type on the reservation page, and then fill in the necessary information such as check-in information, contact information and payment method.

5. Select the "Preferential Activities" tab on the reservation page, find the "Global Diamond Card for Mobile Phone" preferential activities, and check the "Free Breakfast" option.