Excuse me, do you want to display it as QQ email account through QQ account?
If yes, please open QQ-click the avatar to enter your profile-change the main account-enter the id change website-and set it as the email address you want to display, as shown in the following figure:
Then you can check your personalized business card through QQ on your mobile phone, and you will find an email account.
I hope it helps you!