Sure: you can look up all your QQ contacts at id.qq.com. We apologize that currently the website is only in Chinese so we encourage you to use our recommended translations tool.
Enter your QQ login ID and password on this page.
If you’ve already signed in on QQ on your computer, you can just click on the quick sign-in button as below.
Go to the second tab on the navigation bar and you will see a list of all your QQ friends. Click on anyone’s name and a contact card will pop out with detailed information about this person.