The Chen Style Taiji Quan Old Frame II, historically known as "Cannon Boxing" (Pao Chui), is the explosive counterpart to the softer Routine I. This DVD captures the raw, martial essence of the Chen family’s heritage, focusing on power, speed, and sudden aggression. While the First Routine builds the internal foundation, the Second Routine tests the practitioner's ability to express that energy through rapid movements and forceful strikes. It is a legendary routine that represents the peak of combat efficiency in the Chenjiagou tradition, emphasizing the "Hardness" that dwells within the "Softness."

Technique-wise, Cannon Boxing is characterized by its dynamic footwork and explosive "Fajin" (force release). The curriculum focuses on the "Four Directions" and the advanced use of elbows, knees, and shoulders as weapons. Grandmaster Chen Zhenglei demonstrates the complex mechanics of stamping and dodging, showing how a practitioner can leap into the air or change direction in a split second. The training emphasizes "letting the hand lead the body," ensuring that the practitioner’s footsteps remain flexible and steady even under the high-intensity demands of the routine. This is a scientific exploration of biomechanics applied to rapid combat, requiring the practitioner to embody the spirit of a fierce tiger.

Value-wise, practicing Old Frame II lies in its ability to develop extraordinary cardiovascular endurance, coordination, and explosive strength. It transforms the practitioner into a dynamic martial artist capable of high-speed defense and offense. Beyond the physical, it fosters a sense of daring and confidence, helping the student overcome mental barriers through high-spirited movement. For the advanced practitioner, this DVD is an indispensable guide to mastering the "fierce" side of Tai Chi, ensuring that the combat integrity of the art is preserved for future generations.