I finally go out and have a try! I can't believe I can actually take the emblem off.

Thanks for giving me information. I went to Lordco and check first... WOW! 3M Adhesive Remover cost 34CDN! Holy S***. So I end up buying a double side tape for 8 bucks (4.5metres) so it's pretty reasonable. But when I go to Canadian Tire, they have no double side tape (Thank God!) and no adhesive reomover. But the satff say Acetone also work. I check the price it's only 5.99! What a difference. I will show you the pic after my Camry is debaged