They are definitely weapons that can only be found there, and can only be weirded by members of Cang Qiong Mountain sect. Deciples who are ready for a proper sword of their own go there to find their personal sword. The one right for then they will be able to pull out easily.

[ Shen Qingqiu wasn't particularly more animated, but there was a bit of a hint of someone talking about a favored subject. Not because he particularly cared about weapons, but because he was sharing Lore. ]