Taoist Yoga or Dowist Yoga is not really a suitable name. Grandmaster c. Chee Soo used to call the Art K’ai Men (see above). Yoga implies Indian stretching exercises, not Chinese and rather than trying to repeat what is already out there I will give you a link to read after this article*.
As much history was lost, or should I say “destroyed” during Mao’s “Cultural Revolution” many traditional practitioners were driven out of China and many more killed, it is almost impossible for anyone to accurately say what, if anything, Daoist Yoga originally pertained to. However, an educated guess may bring us to what is popularly called “Inner Alchemy”. This is the bringing on of change and transformation by the practitioner to his or her own body. It is nothing to do with magic or mysticism, just Mind, body and Qi (Ch’i).
Before anyone can judge or even understand this subject at least ten years has to be spent practising the exercises in the proper way, to be able to “feel” the changes; otherwise any attempts