I ordered a Wii from eBay. It's shipping with China Post. Any idea if my product is on a plane or something?

Coming from China, your Wii is more than likely being shipped by air. The only other option would be ship and it would take weeks to reach Canada by that method depending on where you are and where they are. More than likely the Wii went by truck or rail to a major city and then went by air to your city. I hope it all works out.