Biu Jee is the 3rd empty-hand form in Wing Chun which emphasized much on the short range attacks and defenses. Many movements in Biu Jee are conducted in half-length hand distance, but being said short range doesn’t mean that all movements are being done in such way that limits the hands to create a full blown attacks using the full length capacity of the hands.
Initially it was told that the Biu Jee was the secret movements of Wing Chun that was being taught only to a handful of loyal and preferable disciples (closed door students only). But for some people, Biu Jee is a set of movements that completes Wing Chun. Biu Jee is needed the most when a Wing Chun Practitioner is making a mistake or in a bad position, because Biu Jee is the method to recover from the mistake and turn the movement into a supplementary action.
The late GM Kang Sin Sin divided the Biu Jee form into 11 sections, which many of the sections are focusing on the elbow strikes, wrists and thrusting fingers attacks, legs swipes, body pivot movements, and hand grabs.
A Wing Chun Practitioner will find many circular movements being practiced in the Biu Jee form in comparison to the previous 2 forms, the Siu Nim Tao and the Chum Kiu . These circular movements create additional force/power needed by the Wing Chun Practitioner to free oneself from a devastated position and in return give back a full blown attack. The circular movements in Biu Jee are done by almost all of the body parts such as the wrist, arm, elbow, shoulder, waist, leg, and foot. A Wing Chun Practitioner may realize that he/she will need a good body flexibility and stability in order to master the Biu Jee.