Step up , Deflect,parry and punch in the older lineages.
The posture step up deflect, parry and punch has many variations that are often masked in modern versions. The stepping action can be made to dodge, tread, or kick the opponents knee/shin/foot. The hands use a threading movement to feed the opponents elbow into your hand. The footing can kick and stand on the knee to hold the person down or can simply rake down the shin and stomp the foot breaking the foot. The kicking advancing step is hidden in many forms to where there is no idea that it can be used in that fashion. This particular version makes no attempt to hide it’s Martial flavor. This movement is both an attack and defense on the upper and lower parts of your opponent which serves to overwhelm them often leading to a finishing blow. I follow my opponents attempted rebalancing by capturing his elbow circle and taking it outside of his hip/knee thus destabilizing him and making entry for the punch.It is no mistake that this movement repeats multiple times throughout the traditional long form.