East Asian players have the best finishing technique on the planet. I'm not sure what it is but the precision and power that they manage to get behind their shots is at times just unreal. Son's goal vs Uzbekistan (2:09), in the following video, is a perfect example of this.
One of my favorite goals of all time, might seem strange as it's a finish from point blank range, but the technique and speed of the shot is just so satisfying to watch.