I am assuming he is referring to Taan Sau(ton sau?) Which i know as the spreading hand. From what I can see and have heard, "beauty looking at mirror" is an adaptation on the english side for what many people turn into an improper technique. Now the wording of it doesnt always mean it's taught improperly, but I have seen personally, and heard of times when it is wrong.
"beauty looking at mirror" Implies that a woman is holding a mirror in front of her face, palm flush to her face, at a 90 degree angle. I have even heard this phrase used as a derogatory phrase for people who taught bad gung fu(I am not implying that here though). What I am curious about from the regular panel here is this: Does this mean you perform your Taan Sau at a 90 degree angle? If so, I would like to discuss the positives and negatives of the angle used and adjusting it.
Observer my powerful MSpaint skills:
from my point of view, this is how i view the use of taan sau. at 90 degrees, it is vulnerable to crushing blows. The opponent can press at it and break through. At 0 degrees, it is a non factor. At 45 degrees, it is strongest. It's more stable, and more conducive to Lap, Tok, Bil, etc.
So my question for you all again is this: How do you use Taan Sau? What reasons do you see for that use? What ways have the wording of a technique affected the application of it?