Sun punch power with
Body type direct , body type twist , force line type direct, and force line type double helix.
Notice the different in "acceleration run way" needed for body type to generate power, and the different in depth of penetration
Force line types dont need to pull back arm at all and can bounce at bridge contact via issuing force flow into the opponents structure. While body type is based on object collision.
https://www.youtube.com/watch?v=7heg...=youtube_gdata