Yi Quan DVD no 3 
Applying Force of Yi Quan
Free sparring in Yi Quan
by Bo Jiacong  - President of Beijing Yiquan Research Institute

Applying Force in Yiquan
Fali (Applying Force) or also called "Issuing Power" is a major issue in Chinese Boxing as it will condition how decisive will be your attack or counterattack.
As an advanced exercise it requested the mastery of previous types of exercices such as Stake, Try Force and Footwork.
General requirements of Applying Force: Explosive movements followed by immediate calmness.

Free sparring in Yi Quan
Free sparring in Chinese is called "San Shou" meaning litterally "Separating Hands" (in opposition to Tuishou - "Sticking Hands"), this is final stage of
training where practitioner can demonstrate their overall skills, as the "platform" where any external observer can valid one's real achievement in boxing.
Free sparring focuses on emty handed competition. The general requirements to be respected within Free Sparring:
1. Even within Sparring continue to observe and nuture one's internal power,
2. Maintain as permanently as possible a Whole Body Power,
3. Combine attack and defense in each movement,
4. Protect your central line and attack your opponent's one,
5. Practice it continuously even while walking, standing or lying.