In ROCH, it was said that Gung Sheun Tze's (the Master of Passionless Valley) martial arts depended on his consuming no flesh/blood or alcohol, and that exposure to these items would destroy his martial arts. Kau Cheen Chek used this vulnerability to thwart Gung Sheun Tze once, using her own blood to spike a cup of tea that Gung Sheun Tze drunk, causing him to lose his martial arts abilities and be defeated by Yeung Gor (and subsequently blinded in one eye by Kau Cheen Chek). Gung Sheun Tze shows up again later, however, and his martial arts skills seem as powerful as ever. What happened? Was the loss of power only temporary?