I disagree! Chi Sau is a pre sparring drill unless you are stupid and think it is about sensing energy and that clip is just a bit of light training btw.
This is the bit where you are meant to offer a better clip of how its meant to be done......on you go son!!!........I can't see it myself though as nobody posts chi sau clips of themselves. They just post themselves talking and showing drills which any t**t can do!!
GH