Ive read some articles regarding the difference between these two arts, but haven't read it where they compare, so I am completely at lost how these two would differ from each other. What I learned so far that has some tendency to point out the obvious, which is Yi-Quan has less forms or isnt distracted by confining to forms and the founder never intended to be a slow learning and development of qi? But lately I am also reading that main principle behind is indeed qi, and hence it's regarded as an internal art. So those who practiced it both or are aware of it thoroughly, physical wise or principle wise, what makes these two different practically?