Ok, I give up.
The visa office of my submission is Beijing office. My location is Shanghai, China.
In another forum, over 5 persons said that their offices were visited by visa officer in the recent 2 days. I think it is just an activity within China and has not became a common action for other contries.
My ecase at CIC is In process, however, with only 4 sentences after click on the stats, and has not revealed the date that the process has begun.
Hope that helps all of you.