Gung Sheun Tze's signature weapons were a pair of sabers called the Yin Yang Double Sabers. These weapons must have been made of extraordinary materials...perhaps the same kind of material from which the Lady and Gentleman Swords (which were likewise part of the Passionless Valley arsenal) were made. The first time that Gung Sheun Tze used the Yin Yang Double Sabers to fight Yeung Gor, who was armed with Fan 1 Yung's metal rod (which was quite formidable itself), the sabers were able to cut through the rod easily. Additionally, the Lady and Gentleman Swords were unable to cut through the Yin Yang Double Sabers: Gung Sheun Tze might have lost out to the Double Sword Attack on technique, but he didn't lose on the account of having inferior weaponry.
Along with the Lady and Gentleman Swords, the Yin Yang Double Sabers might have been the best weapons seen in ROCH before Yeung Gor found Dook Goo Kau Bai's Sword Tomb. Passionless Valley was a repository for some excellent weapons.