In LEGEND OF THE CONDOR HEROES, West Poison Au Yeung Fung made a bet with Gwok Jing that the Mongol troops under Gwok Jing's command would not be able to capture him alive three times. Thanks to Wong Yung's plotting, the Mongol troops did succeed in entrapping Au Yeung Fung twice.
The first trap, however, shouldn't have worked.
The first trap consisted of having Au Yeung Fung fall into a deep pit dug outside the entrance of Gwok Jing's tent. As soon as Au Yeung Fung fell in, Mongol troops dumped dozens of heavy sandbags into the pit, neutralizing any attempt by Au Yeung Fung to escape the pit with his hing gung.
All that is good and well, but *how* did the Mongol troops manage to get Au Yeung Fung into chains to present him to Gwok Jing?
Au Yeung Fung was one of the Greats. The sandbags might have momentarily stunned him and made it impossible for him to escape the pit, but the Mongol troops nevertheless had to get the sandbags off of him to chain him and bring him to Gwok Jing. The thing is, the moment those sandbags came off, there was nothing to prevent Au Yeung Fung from lashing out, killing the Mongol troops attempting to chain him, and escaping. There was just no way that a few soldiers could have chained Au Yeung Fung.