In the current edition of DGSD, Hui Juk helped Kiu Fung to refine the Hong Lung 28 Palms into the Hong Lung 18 Palms, and later transmitted the skill to the succeeding Beggar's Union Chief (who did it ultimately turn out to be after Yau Tan Tze had his brief fling with the title?).
Did Hui Juk ever use Hong Lung 18 Palms during DGSD, however? The mind boggles at the thought of what someone with Hui Juk's inner power could do with Hong Lung 18 Palms.