Chansijin or chansijing depending on which character one chooses means roughly, silk reeling power.  Last summer I posted this list of the seven types or levels of chansijin.  I'm linking to it now because it never got any discussion at the time.  There may not be much to say about it, but I still think it is a cool list.  I think there is a suggestion in this list that the entirety of Taijiquan can be transmitted through any one practice if that practice is ridden all the way out.