Many years ago, I was trained to believe that Wing Chun is a fighting art with main emphasis on sticking hand. To learn the opponents' movements, then to exercise counter attack.
NOW I KNOW THAT THAT IS ONLY 50% CORRECT.
The real fighting art from the Chinese culture would not be that inflexible!
The other extreme should be emphasized also. That is the utmost speed, and the utmost power. Then the true picture of 'ying' and 'yang' in unison is reflected. He should learn to build up the muscles, the stamina, and the thrust.
The 'thrusting finger' would be the representing form.
'Searching the bridge' is the exact opposite of the 'thrusting finger', and vice versa.
Without the balance of the physical body, there would be an imbalance of the mental focusing. AND VICE VERSA.
The good and evil are opposite AND equal to each other---the mind of a Wing Chun fighter.