In the "Yingde Odd Stone Hometown" exhibition hall, there is a pair of Ying stones that resemble swords and knives - the owner calls them the "Dragon-Slaying Knives," one male and one female. The "female knife" is 2.6 meters long, slim, thin, and elegant; the "male knife" is about 2.3 meters long, shorter, thicker, and exudes a sense of powerful dominance. The two knives have been fitted with pomelo wood handles by their owner, Mr. Wu, making them look like real weapons and catching everyone's eye in the exhibition hall. Mr. Wu told reporters that he discovered these two Ying stones in 2002 on a mountain in Wangbu Town, Yingde. A buyer once offered 20,000 yuan to purchase them, but Mr. Wu politely declined the offer.