A Tai Chi form can be a wonderful toolbox from which you can learn all sorts of stuff.
In our Tai Chi learning we can use White Crane Spreads Wings to train soft, heavy hands. An example of how to do this is shown by my student :-
What he is doing here is to borrow the transition right arm movement when we change from White Crane Spreads Wings to Brush Knee, Twist Step to train how to relax the arm and move it diagonally across his body using the 6-harmonies principle in tandem with the 5-Count mechanism that is covered in the eBook TaijiKinesis Vol 2 : Learning the Taijiquan form.
However, his movement is not precise enough so the power is not expressed at the optimal level. You can tell this from the sound of his palm striking his body. Before this he also tried hitting a solid post to check his power as can be seen below :-
Below is my demonstration of how to do it correctly :-
The correct application of the principles will allow you to have heavy, relaxed arms – you can hear the sound of light striking on the post below :-
The videos here do not explain how to do this arm movement to obtain this result. So how do you do it?