Thanks to Chinese site http://www.sjroot.com
, we now have a root wizard that can root many Chinese MTK6589, MTK6577 and MTK6575 phones. It can help many users who find it difficult to root their phones with other methods.
First you need to install USB drivers to your PC if you haven't done already. You can refer to this thread
or this one
to get files and help.
Also, enable the USB debugging mode from Settings > Developer Options.
Download the attached Root_wizard.zip, extract and run the Root_wizard.exe
"Attachment removed due to malware warning from Google" If you want to take the risk, you can download it from sjroot.com
Connect your phone and follow the wizard by clicking Next.
After rooting, install SuperSU or Superuser from Google play store and uninstall Chinese KingUser app.
Please post your results for other members.