Who else could it be, if not Mo Zhu Mountain, or the Luo Sect?
In any case, it's one of the three major sects.
Although Li Fan still didn't understand the specifics of this conspiracy, how it was planned, how it was executed, and how it would develop, if such a grand, shadowy scheme truly existed, its ultimate goal seemed clear enough.
It was nothing more than the traditional three powers, employing tactics to suppress the increasingly noticeable ascent of the Mo Zhu Mountain sect.
Perhaps the three major sects weren't the masterminds, but they would certainly be happy to see it happen and actively cooperate.