Do the terms "wulin" and "jiangwu" really refer to the same thing? Wuxia characters and wuxia readers seem to use the term interchangeably, but I seem to perceive a slight difference. "Wulin" seems to refer exclusively to the society of martial arts practitioners, learners, and teachers; "jiangwu," on the other hand, seems to refer to a broader society that includes not only martial arts practitioners, but also non-martial artists who nevertheless have deep ties with the world of martial arts (i.e. criminals, government officials, wealthy merchants and powerful landlords, certain professional tradesmen such as physicians, skilled workers such as blacksmiths, and some religious clergy, etc.). Is this so?