It's come to my attention that during the final major battle (against the Liao army) of DGSD, Deun Yu was seen unleashing a series of flying kicks against a host of Liao soldiers, and even intercepting Siu Fung's Hong Lung 28 Palms not with 6 Mak Divine Swords, but with a palm of this own.
This implies that some time between his most recent appearance before the final battle and the battle itself, Deun Yu *must* have received some training in conventional martial arts techniques...his attainment likely accelerated due to his superior Bak Ming Sun Gung inner power. How else could we possibly explain the sudden emergence of such abilities?