I tell you, we have discussed Xiao Yao Sect numerous times in the past, but I can never remember the conclusion we make.
In chapter 9, Duan Yu recognized that Murong Bo was reciting text from Lingbuo Weibu manual, albeit the text was slightly off or something. Does that mean that Murong Bo picked up LBWB? Or was he just reciting from I-Ching which LBWB was based on?