However I have tried many ways and couldn't find the shutter count.

I want to make a last confirmative test which is to see the shutter count. Currently everything else looked good, the camera's LCD looked clean and new, the serial number on the camera matches that on the box (the serial number shown on the box is on a sticker, there is no visible sign that the sticker is re-pasted), the camera asked me to set date and time when I first turned it on, and when I took a picture, the picture had file name '0元A0001' so it started from 0001 which is a good sign.

Since it is grey market I wish to make sure my camera is indeed new. I just bought a canon 5ds (not 5dsr) from getitdigital, a reputable grey market seller from ebay.