What a troublesome opponent, one might even say... highly restrictive of me!
This was what Zhang Zhiyun thought after experiencing the so-called West Sea Secret Technique from the other party.
Indeed, the thread was formed from condensed wind, relying on a sophisticated Barrier Technique involving space. He had guessed the principle somewhat: it involved using some means to compress a fragment of space with high Spiritual Power, turning it into thread-like forms, and then infusing it with a large amount of wind elements. When the thread was revealed, employing extremely skilled techniques allowed the wind to flow out, creating a high-speed cutting edge. Upon closer observation, one could see that what clung to those threads was rapidly circulating wind!
