两手握拳于腰侧或平伸。挺胸，塌腰，脚跟外蹬，膝不过脚尖。 虚步要求前腿虚，后腿实，虚实分明。 要把身体的主要力量放在支撑腿上，虚步占三分。
弓步、马步、虚步、歇步、仆步、推掌、缠手、拍脚。
The main techniques are forward lunge, horse stance, empty step, rest-stand step, crouching step, pushing palm, twisting hand, and pat the feet.
新系统的正确率得到进一步提升的同时，虚警率得以有效降低，并且，具有更为稳定、可靠的性能。
Correct rate is increased further, while, false alarm rate is decreased effectively. Also, performance of the new system is more stable and reliable.
同时引入旋转变换使每一相的雅可比矩阵和信息矩阵实虚部严格解耦，进一步降低了问题的求解规模。
Besides, with the use of rotation transformation, the real and image parts of Jacobian matrix and information matrix can be strictly decoupled, so that the solution scale is reduced furthermore.
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