Tai Chi is based on correct posture and proper alignment to make the best use of your whole body.
everydaytaichi by lucy has developed "key words" that she uses to call out as the movements are done
Closing Form
After Cross Hands
Exhale on the down movement
Wrap around
Up on your toe
Off the ground
Toe down
Heel down
Exhale on the down movement
Wrap around
Up on your toe
Off the ground
Toe down
Heel down