外三合--3 combinations Outside

內家拳術強調"內三合與外三合"，所謂的內三合是內裡的功夫 ，指的是精氣神，外形上看不出來，先不去論它。外三合是指＂手與腳合，肘與膝合，肩與胯合＂。就字面上來說，外三合十分易懂，只要我們遵循它的要求進行就可以了。不過事實上，外三合需經由特殊的練習方式來達成。
Internal Martial Art (for example: Taiji) emphasize that people need to check when practicing are "3 combinations inside and 3 combinations outside". The "3 combinations inside" check inside human body, and that can't be seen by our body.
Here we just discuss the "3 combinations outside". The 1st one is to keep leg follow the hand. The 2nd is to keep the elbow work together with knee. The 3rd one is to keep the shoulder work with hipbone.

多數的中國武術練習外三合都是使用靜樁來練習，尤其是三體式。由於缺乏動態的外三合練習，這就造成靜止時是待合外三合標準，而動作過程中，卻往往是不符合外三合標準的姿勢，造成所謂的敗型，敗型雖然在面對不會防禦的一般人時仍能發揮作用，但對於有學習過武術的高手來說，那就是會遭到對方反制而失敗的動作。動態的外三合練習十分的簡單，外型看起來就像是在走路一般，重要的是要＂分清虛實＂且可以＂片旋＂來做主軸練習。
Most Chinese Martial Art practice this by motionless stand, and the most important stand is "San Ti". Due to short of motion practice of "San Ti" to keep the 3 combinations outside, many people only can follow the 3 combinations outside when stop. When they move, the whole body can't follow to rule. Some people might said that can still work. We know that can work when the opponent don't know how to defense, but for people who practice the martial art for years. That would be a dangerous thing. When we do thing without 3 combinations outside, that means we ask our opponent to attack us by our mistake.
The way we practice 3 combinations outside is easy. It looks like walking. The key point is follow the rule and use the "Pian Xuan" to rotate our body when we move.