Twice towards the end of HSDS, the mysterious Lady Yeung (Yellow-Robed Maiden) appeared suddenly and unexpectedly to help the heroes put a quick and convenient end to two crises: Chan Yau Leung's plot to usurp the Beggar's Union using a fake Union Chief Shih For Lung and Chow Chi Yerk's attempt to murder Tse Tsun at Shaolin. Her intervention expeditiously thwarted the villains' plans.
That said, could the heroes have prevailed without her? If Lady Yeung hadn't appeared on either of those occasions, how would the heroes have resolved those problems? Could they have?