i think it may have something to do with first throwing open palm n closing it into a fist really fast. i just blew a regular candle from a good distance

I've been doing that with candles and lanterns since I was a teenager. It's a neat trick, but it's not actually qi. The feat in the op's link still boils down to basic air disruption. Using true qi, the guy in the video should've been able to extinquish the fire from much further away, and less directly aimed at a the fire (ie> with a passing motion, not a directed one).

Yea its cool trick , takes some practice .

The problem for me is that they are to close to the candle , i need minimum 10 ft !

Surely you can train and boost your "chi" energy to a mere 10 ft .

Its harnessed from the universe into the body no ?