2. Then click the "Login" button, enter the QQ number and password, and log in to Tencent Security Center.
3. Then click "Authentication" in the upper right corner of the homepage of Tencent Security Center to enter the authentication page.
4. Then select "Tencent Authenticator" on the authentication page to download and install the Tencent Authenticator application.
5. Then open the Tencent authenticator application, and enter the QQ number and password to log in to Tencent account.
6. Finally, after successful login, Tencent authenticator will automatically generate an activation code, which can be found in the application.