When you have learned the motion sequence and you know it by heart,
you are just starting out.
Now the real work begins. Just as a singer can only dedicate himself
to interpret a song after he knows the melody and the text of it well.
Now you decide whether the movement is only gymnastics or becomes qigong.
If your attention stays connected with the movement, your mind can enter
into the movement and change it, qi gets into it as well and works.
Now you are practising qigong.
It is the same with Tai Ji Quan. After learning the form the real work starts.
The form has to be filled with content.