Taijiquan form begins as a robotic sequence of movements and gradually transcends its original form. Movements become increasingly subtle and internally convoluted, and their power increases.
Instead of being limited by form, the practitioner merges with it to become formless.
This journey does not happen by itself.
Beginners spend ages locked in patterns of tension and external movement, never realising that the form can and should progress.
How does form move from basic to advanced? Neigong.