I assume OP also wanted to discuss... Did someone say that hook punch exist in the WC system? How can you train hook punch without training the back fist?
In my WC, coming out of the "WT" lineage, there is both a
both hook and a backfist ...even if my old sifu didn't lay it out that way.
Here's where I get the hook and backfist from in the forms within the traditional system:
1. The Chum Kiu pivoting "Hacking Elbows" (Lan Sau) can be interpreted as both hook and backfist as well as elbow strikes (see 2:26-2:30 and again at 2:50-2:54 in the clip below):
a.
Hook: If you can hit them with a lan sau (when turning towards your opponent) you can use the same structure and energy while closing your fist and hit them with a hook punch. And, you can open your elbow angle beyond 90° as needed to get more range.
b.
Backfist: Usually WC uses a
Fak-Sau instead of a backfist, especially when targeting the neck or throat, but in most applications, you can close the open-handed fak-sau into a fist, and voila, you have a very functional
backfist ...perhaps more functional (and safer) when wearing gloves and sparring. In the pivoting
Lan-Sau sequence in Chum-Kiu, the back fist would be an extension of
the pivot away from your opponent. If your elbow misses, your unwinding fak-sau
or fist will do the job.
2. Chum Kiu and Biu Tze pivoting Fak-Sau movements: The following pivoting fak sau sequences in Chum Kiu and Biu Tze are additional examples of movements that can be applied as backfists (see 3:08-3:10 in Chum Kiu section of the clip below, and again at 5:45-5:55 in the Biu Tze section in the same clip):
3. Biu Tze Double arm-grapple, hook punch, dropping-elbow, and throat-strike sequence: Note the hook punch when pivoting back to center after the arm grapple. This is followed by a dropping elbow (chik-lok jarn) and an open palm throat strike. The elbow dropping movement also can be translated as a
downward vertical backfist, expressing t
he same relationship between a backward elbow strike and backfist as noted before (see 5:55 to 6:05 in the clip below).
Old footage of Chum Kiu and Biu Tze in the "WT" lineage: