johnwang wrote: (snip)
I can understand that if you develop your Taiji from your form. Later on you take drills out of that form and only train those drills. I don't know how to learn taiji without the form to start with. It's like go to school without text books. Can that even be possible?
Sure, it's possible! You can start by training taiji's internal core body method, then learn how to apply it to technique (via forms -- sequences of techniques) AFTER you've developed the internal structure/power. In taiji systems that retain (and teach) an internal power component, you can learn specific things to do with your body to develop structure and power. Those exercises and drills can be practiced separately and outside of forms. Then they can be used to power the forms when the students start learning forms.
If you start with technique-sequence forms, then the students don't know how to generate power internally, and have to either walk through an "empty" form devoid of any understanding of what each movement "means," or else thtey come to rely on whole-body pivoting, "outer" hip torque, momentum and other conventionally "external" methods to try to make sense of where the power comes from. It can create a lot of bad habits that will impede future use of internal power once it is learned (if it ever is). IMO, it makes more sense that taiji be taught either as "internal power"+ technique simultaneously, or internal first, then technique. But technique first, then how to power it internally, seems ass-backward to me.