Do you want to change your profile picture and your information available to QQ contacts? It’s fairly easy. Tap on the “Settings” tab then “My Profile”.
From this menu you can tap again on the profile picture to change it with another image. By tapping “Edit” you can change your date of birth, nickname, gender, and status message (which will be publicly visible). If you tap on the background shown at the top of your profile you can change it as you like. Please notice that this will also be your Qzone background cover.