Hello Jow Family!
Let me see if I can be of help...
Ok, so it appears that we have two separate (three-character) formulae here:
1) 照捞打/Jiu Lau Da
and
2) 照割拿/ Jiu Got Na
In the first formula, in Southern Chinese Gung Fu, the character "照" (Jiu) is most commonly understood as meaning "to block", or "to counter" (with a martial arts technique). However, it is apparent that in your Jow Ga system, "照手" (Jiu Sau) is a terminology which refers specifically to what we (in Hung Kyun) know as the “穿桥” (Chyun Kiu), or "Drilling Bridge". This foundational block/ attacking bridge-hand forms the basis of the compound technique known as "猫儿洗面" (Mau Yi Sai Min), or "Cat Washes (its) Face".
Another thought about "照手" (Jiu Sau) is that, in Hung Kyun, rather than always playing this hand as an aggressive “穿桥” (Chyun Kiu), or "Drilling Bridge", a more receptive structure/ energy is alternately used, in the form of the
"鹤翅手" (Hok Chi Sau), or "Crane Wing Hand". I am of the impression that Jow Ga utilizes both variations also, and in similar fashion. Either way, "照手" (Jiu Sau) could quite practically be described as the "Counter Hand" technique .
"捞手" (Lau Sau) is the "Scooping Hand" technique. If, from the right-hand “穿桥” (Chyun Kiu), I then twist my right hand clockwise until it faces the ceiling, palm-up, at belt-level, this is the "捞手" (Lau Sau), or "Scooping Hand". The effect is to grip and twist the opponent's skeleton on contact, setting him up for the finishing "打" (Da), or "Strike".
In the second formula, we start once more with the same character "照" (Jiu), which I am again interpreting
(for all intents and purposes) as the Hung Ga "Drilling Bridge" (or "Crane Wing Hand").
Next, however, instead of continuing with the "捞手" (Lau Sau), or "Scooping Hand", I reverse the motion, and use the "割手" (Got Sau), or "Cutting Hand" technique, cutting downward in counter-clockwise fashion toward my hip, I then continue counter-clockwise into the "拿手" (Na Sau), or "Gripping Hand" technique, following my opponent's hand up, or keeping it down (depending how he struggles upon being gripped), as I deliver my counter-strike (not mentioned in the three character formula offered
).
Now, this all may sound rather complicated, but it is not:
In the first case, we have a right-hand clockwise circle, first half rising into the "照手" (Jiu Sau), or "Counter Hand", second half sinking down into the "捞手" (Lau Sau), or "Scooping Hand". As the "打" (Da), or "Strike" is delivered simultaneously with the "Scoop", the timing rhythm here is simply: "Drill - Scoop/ Strike".
In the second case, we begin with the same right-hand clockwise circle, first half rising into the "照手" (Jiu Sau), or
"Counter Hand", but here we reverse our trajectory upon initial contact (moving counter-clockwise), and sink down into the "割手" (Got Sau), or "Cutting Hand". Once having "killed" the opponent's motion with the "Cutting Hand", we continue (counter-clockwise) into the "Grip" (simultaneous with the delivery of our "Strike"), thus, the timing rhythm here is simply: "Drill - Cut - Grip/ Strike".
Basically, these two "照手" (Jiu Sau) formulae, both clockwise and counter-clockwise, can be seen as providing a mutual reinforcement.
Best,
Michael
PS: In the photograph above, the term "对照" (Deui Jiu) is likely being used in the more commonly understood sense of, "(Master) Lee Ngau and (Master) Lam Cheuk Wun, Countering One Another", rather than in the more esoteric understanding of the "照手" (Jiu Sau) technique itself.