Originally Posted by
EdenResident
QKDNY is more like Murong family's Star Shifting technique. They both redirect the opponent's attack back to them or to a third person. QKDNY is superior because it also allows one to maximize his strength and spot the opponent's weaknesses. QKDNY also allows one to analyze the opponent's techniques but copying their moves is more due to ZWJ's geniuses, I believe.
XWXG to me is more like any other internal-focused manuals like YJJ or 9Yang in that, you can use it to power your techniques. XWXG is different because if you use it effectively, your opponent wouldn't even know you're using it, hence the "wuxiang" in XWXG. However, also because of this feature, it can cause injury if it's not compatible with the external technique. For example, JMZ got into trouble because he used XWXG, a Taoist art, to power Shaolin's Buddhist arts. Other internal manuals like 9Yang don't have this problem. ZWJ uses 9Yang to power everything, from non-Chinese arts like QKDNY to soft arts like Taiji or hard arts like 7 Damage Fist.