Zuo Shuming faltered, of course it was rare for a peak master to teach a lesson personally, but they were merely disciples who had just joined the inner sect, if they just went to the lesson like that, don't mention not understanding anything, they might even be misled. Hence, for such lessons, usually it was mostly disciples at Golden Core and above that would attend.
What's more, the peak master of Dan Chen Mountain, Perfected Shu Yuan was a core cultivator too, his lesson would probably be all about core cultivators, he had already decided to specialize in sword cultivation, it was totally unnecessary to listen to a lesson about core cultivators.
Shu Yi so carelessly came to invite him, a disciple who had just entered Foundation Establishment to attend a lesson at Dan Chen Mountain, seems like there was indeed something wrong with her head?