Butterfly Pa Kua Chang In Three Easy Steps! By: Al Case | - The first thing you are going to have to overcome is the idea that it takes decades to learn such arts as Tai Chi Chuan or Pa Kua Chang or Aikido. Look, the army makes soldiers in three months, and that includes some high tech stuff. And, when you add up the actual hours spent on that college course, it doesn't take that long to make a scientist or mathematician.