Wing Chun has perfect centerline and in the zone theory and practice.
It is both economical or efficient and practical.
If you have your fist or palms taking up your centerline, all the incoming fists and legs are moved out of your vital areas or outside of your shoulder line.
With 2 hands, or one is Yin to defend and the other is Yang to attack and interchangable.
Plus elbow high, mid and low, up and down.
There are many changes in space and timing. Both hands and elbows may work in sequence and combo. Talking about the 10,000 of Buddha hand and not just 3 times or San Fo Shou in the little ideas.
The many little ideas never run out of good ideas.
All the thousand changes and million transformations are all your Buddha hands.
With the Buddha in your heart or centerline, the hands will give you 10,000 forms.
Bored.
Naaah. NEVER.