he look the part to me in real life most kungfu master are what 5'2-5'5, the villian son is the one that does not look or act as a kungfu dude look at his kungfu stand very nerdy funny (if you watch Connan Obrien you know what i mean).
haha .. why would Donnie even spend such long duration to make series when he can make more with a shorter duration making movies?? the duration to make a series ... he'll probably be able to make min 4 movies.
the fact is that there's hardly anyone similar Donnie Yen in TVB, even if there is (like Derek Kwok), there's a limited amount of actors who are considered to be leads (siu seng), and actually older than Kenneth Ma (Kevin Cheng is about 3/4 yrs older than him in real life, so it works). He's doing pretty good this time actually
no one "young" in TVB knows actual Kung Fu...kevin fits the role cuz he looks like the type of guy going out for revenge...perfect example...last year's series with him and yoyo mung and derek kwok...forgot the name
another option i would choose Ron Ng...Ron Ng in my opinion is a better actor than Kevin and also have that vengeful look
no one in this series is really convincing in terms of REAL KUNG FU except Yuen Qiu
Kevin failed miserably in this series regardless of how hard he tried .. Kenneth on the hand might give be a bit better than him. I don't know they arranged all these roles in HK TVB .. obviously not audition for it based on the actors and actresses. When you do martial art series .. the physical appearance is as important as the acting ability.