Unlike western boxing which includes leaning to throw weight behind a punch, Hung Gar uses its deep grounding to push out kinetic energy from the ground, magnified as it is carried through the body and ends up as a great amount of force in the fist. Many people believe that the floating tip toeing combat stances of modern combat sport also allows ground power to be used. Compared to modern martial arts, traditional Hung Gar not just have our soles placed fully and firmly on the ground to have maximum leverage, we train ourselves to root our body beneath the surface of the earth. Which is why it is possible for a person without a huge and muscular upper body to deliver hard and heavy blows.
A punch will not be enough, although Hung Gar has strong emphasis on defense and counterattacks, combination attacks are very important too. You need to flow from one blow to another, with accuracy and efficiency instead of wildly flailing arms. That's why we practice our combination strikes with other punches and do shadowboxing to integrate our techniques.