Two-step verification is an authentication process that increases the security of your account.
How to enable Google's 2 step verification:
Download and set-up the Google Authenticator app on your mobile phone
If you are logging in from China and do not have access to Google Play Store the Google Authenticator app is available from Baidu app store. http://shouji.baidu.com/software/10010832.html
Click on the User Information icon, then click on Security.
Use the Google Authenticator app on your mobile to scan the QR code directly from your computer screen
Enter the 6-digit Authenticator Code within the time limit.
A success message will appear if you have correctly input the Authentication code, as shown as follow.
Please log out of your account. Log in again to make sure your 2FA is really working. If you encounter any malfunctioning of the authentication process, please report to our team at firstname.lastname@example.org.