What kind of vigorous action does Wang Erping 83 New Tai Ji Chuan teaching belong to?

In the teaching of "83" New Tai Ji Chuan, "King Kong Tamper" is a vigorous action, which requires loosening hips, sinking shoulders, lowering elbows and loosening wrists, lifting the internal strength from the soles of the feet to the arms along the legs, and then infiltrating the strength into the hands and feet with the waist as the axis, so as to achieve the effect of being soft and hurting the vitality. Vigorous action refers to spiritual guidance, so that the inner strength is secretly conveyed, and the strength is released through softening and stiffening in the state of relaxation, meditation and natural breathing.