It is possible that XF's dragon palms could 1 hit KO a Du monk if he underestimate its power.
However, XF's dragon palms was only rated ~1000 jins/catties.
The force of post-16 YG with the HIS is much higher than 1000 jins/catties.
If XF could 1 hit KO a Du monk, please explain why not YG.
Well I think DYQ more or less equal with LOCH GJ when he fought HYS and H7G in Mt. Hua and I hardly believe even YG could 1-Hit K.O GJ at that time..
XF himself once say that he is strong enough to take on 4 DYQ which equal to 4 LOCH GJ and we agree about it which ROCH GJ or YG also could handle 4 LOCH GJ and Xuan Monks himself no worse than DYQ which mean XF indeed could 1-Hit K.O people at DYQ/LOCH GJ/Xuan Monks level (Lv 60s)..
It's very weird with XF. On one hand you see him one-hit KO the Xuan monks or kick the crap out of DYQ. On the other, you see him fail to flatten Ah Zhou or the stupid tiger with 70% of his palm blast or lose to YTZ+MRF. Just so maddeningly inconsistent for a supposedly God of War.
He's like Superman (whom I have compared to Kiu Fung several times in the past): his prowess goes up and down according to the needs of the plot. On the one hand, we've seen Superman lift the San Andreas Fault back into place or even push the moon from its orbit. On the other hand, we've seen him struggle to stop a hurtling city bus.
In terms of martial arts and skills he is comparable with GJ or YG but when it come in combat he is not good as GJ and YG perhaps due he's not "fighter" by nature and he also never fought someone which much stronger than him before throughout HSDS he always fought against weaker opponents..