Actually it's a
pow chue (long upper) to the mid-torso (or the middle gate), and according to the gate theory (creating openings in the opponent's defense through attacking one section of your opponent's body to open up the defenses of another part), an attack to a lower gate (like that of a
pow chue) is usually followed by a
kup chue or a
sau chue. So we work that with proper footwork to deliver those techniques as efficiently as possible.
A
biu would work also, but the structure of the technique might compromise your position to immediately land another power shot (i.e a
pow or a
sau) in competition, since gloves (as required in these types of competitions) limits the penetration of a regularly exposed fist and to a certain degree, a bit of fine motor-control. Competing in full contact sports requires certain adaptations to be made, and this is one of them. Long as the core principles are intact, it's still CLF
And it's nice to see fellow UIUC alumni here! Hope you're doing well
-Phil