Fajing in Tai Chi Chuan can be taught as a mechanical process. However, this would make it no different from fajing in other styles.
Fajing as a manifestation of intent is more difficult to master but not to teach. By following a simply checklist of three intent anyone can do it, even someone who has learned it on the first lesson. The only caveat is that a beginner would have a problem holding on to the skill or applying it freely.
Broadly speaking, the three intent are :-
When you read the three words you might have an inkling of the process and think its the same as what you do. It might be and it might not be. Without a comparison we can’t say for sure.
Beginners are introduced to the three intent when they learn how the movements of the form are used. It is not so much for the purpose of making our Tai Chi special but for illustrating how the use of specific principles can optimize one’s response by making it work more efficiently.
A reason why beginners have a problem hanging on to what they learn or to use it freely is because they have not mastered the requisite habits of awareness and mindfulness. These habits are necessary for them to control their body’s response when placed under pressure.
In particular, the natural instinct to fight back, to resist mindlessly must be placed under control, allowing them to react properly. We use the form to teach our mind to control our body.
After sufficient control is gained, the student will find it easier to begin the learning of fajing in an internal manner. At this point the teacher will work with the student to teach him how to use his intent to respond to an attack.
This will teach him to receive the pressure properly so that it can be neutralized with lesser effort and in the next instant borrow and return the power. A student will work at it from various levels of familiarity until he can begin to apply it more freely.