The final Wing Chun course is the 12-month Butterfly Swords Course. For nearly a century, Wing Chun practitioners have practiced this form using a specialized type of knife known as Batjumdao, or “Eight Directional Slashing Blades.” However, recent research has shown that the form was originally practiced with a pair of short swords. Using two swords allows the practitioner to transition from the principles learned in pole fighting to two-handed swords and finally to the double short swords, or in other words, from fighting with one line to fighting with and coordinating two weapons. The Butterfly Swords Course employs the thrusting of the punch in stabbing, but adds slashing force as well.

Like pole sparring, sword sparring employs entering and distance fighting, but given that the swords are much shorter than the pole, opportunities for grappling, kicking, throwing, and disarming arise much more often in the swords form. Because of this, the Butterfly Swords Course is the crowning pinnacle of the Wing Chun System.

Sparring with the swords is similar to fencing, except that more than one line is allowed, the rules of foil, saber and epee are all combined, and Wing Chun swordsmen fight with two blades at once. This combination allows for better body balance since a Wing Chun swordsman uses both hands equally.