This is an excellent way to counter an opponent gripping your neck with his two hands

Body-movement is very important in combat, though it is often neglected by many students. Grandmaster Wong demonstrates how to make use of body-movement, without moving the feet, to counter a Boxer's attacks. He also shows how to release an opponents grip, to counter a knee jab and to fell him, as well as demonstrates that there is no attack, including being pinned down, that cannot be overcome.