The Jut da punch is always above the other hand, because the wooden dummy cannot move. Also, this Jut da in second section is actually one hand covers two. Your opponent's body often goes down. Which means that you need to punch a bit lower, otherwise you cannot hit your opponent.

I see what he means about that first PAK SET on set 3. He covers, he FUNG HAO and JUT and PUNCH. When it’s an arm in a fight though, the arm drops, and the punch is above, higher. On the dummy it looks like a chop high and punch low. But in reality, it’s a total system of control all the way around the arm. And the other thing was, if you’re going to PAK pak deep. Go for the weak point. Use cover on the wrist. Use PAK SAO deeper pinning the elbow/forearm. If I’m correct. Or else it makes it easy for the opponent to take the hand back and use it or his elbow.

Dope