Where did Lingyun Sword Dang Bahuang come from?

From "Tianya Mingyue Sword".

The original text is: My mind reaches the clouds, and my sword sweeps across the wilderness. The wind blows the remaining snow, and the flying swallows chase the moon. The returning wind sings softly, and the sword falls on the two swallows. The sword's intention leaves no trace, and snow covers thousands of mountains!

To the effect, the Sword Master blew slowly towards his Moonlight Sword. In the next moment, a clear and sweet sword sound resounded. The sound instantly dispersed the sound of the iron horse clanking and breaking the sword like a river of ice. Ling Tian sat on the ground in exhaustion. On the nails of the five fingers of his left hand, blood spurted out, dyeing the seven-foot ice sword red.