When the Yeun Ming Elder who kidnapped the young Cheung Mo Gei brought the boy to Mt. Mo Dong, Cheung 3 Fung was able to defeat him easily and rescue the son of his beloved fifth student (Cheung Chui San). Probably nobody else in the martial world at the time could have defeated a Yeun Ming Elder so easily, but why didn't Cheung 3 Fung kill him? Cheung 3 Fung was a patient and merciful man, but the kidnapper was a vicious villain who thought nothing of torturing and nearly killing a young boy (who happened to be Cheung 3 Fung's grand-student). I'm surprised Cheung 3 Fung didn't kill him then and there.