Our learning of Tai Chi is governed by the principles of the Tai Chi Classics.
This is important because by following a set of common guidelines we ensure we are working towards achieving the same objectives. This in turn imposes a quality control on what we do in terms of teaching and learning.
For example, in the photo above you can observe a similar quality. The student on the left has lesser years of learning than the student in the middle photo.
The student with more years of learning is then expected to have achieved a more robust and powerful structure and this is exactly the case here. Yet both share a common development in moving along the skill track of 無 (none) to 有 (have) to 繁 (numerous), and back to 無 (none)
By observing the principles we can ensure we achieve the skills set recorded in the Tai Chi Classics.