Originally Posted by
Ren Wo Xing
That's far too simplistic.
Simply the NAME itself, not even the martial arts energy, "Xiao Wu Xiang Gong", is highly, highly secret. Not even all of Tianshan Tonglao's slave leaders could recognize it; in fact, aside from Jiumozhi and the three elders, no one else even practiced it. Li Qiushui was off being an empress, Tianshan Tonglao was chillin' at her mountain (and, if I'm not mistaken, learned Bahuang Liuhe Weiwo Duzungong instead of XWXG anyhow), and Wu Yazi was busy being a cripple. As for Jiumozhi, he himself had never stepped foot in Shaolin in the past. In fact, the ONLY person who, after his entrance in Shaolin, could've possibly used Xiao Wu Xiang Gong in front of him was Li Qiushui. Tonglao used the BHLHWWDZG, Jiumozhi never went to Shaolin, and Wu Yazi was not only a cripple, but also seemed to use BMSG instead.
Where is Sweeper Monk going to learn about Xiao Wu Xiang Gong from?
Think about the ramifications of saying he's not related to Xiao Yao Pai.
That means we have to accept several highly unlikely circumstances.
1) Li Qiushui visited him in Shaolin.
2) He had the chance to observe, in depth, her internal energy generation.
3) She told him the name of their (highly secretive) martial arts style.
All three had to occur. Likely?
He could simply glance at Jiumozhi and ascertain the specific type of energy that belonged to a sect NO ONE in the ENTIRE righteous side of the Wulin knew about? Simply by looking at Jiumozhi! He didn't take Jiu Mozhi's pulse to feel the energy streams inside him; he just glanced at the man, and knew. That implies a VERY deep understanding of Xiao Yao martial arts, and considering everything, I find it highly unlikely that anyone with no connection to Xiao Yao would have understanding like that.
Oh, and ignorance breeds curiosity. If he already knew about XL18Z, what's there to be curious about.