The discovery of the Martial Path, the Martial body, and the Martial Heart. These were three conditions to step into the three lower Realms. Three milestones of potential along the Martial Path, along the journey to maximizing one's Martial Art to its perfect form.
Rui suspected that he had come across information that he wasn't supposed to know yet. However, that didn't necessarily stop him from coming to know more.
('I've already inferred that the trigger to the breakthrough to the Senior Realm is most likely a non-conscious acute process. Furthermore, I've already concluded difficulty of breaking through to the Senior Realm is harder than the conditions for normal humans to tap into their wells of untapped power.')
That gave him a lot of clues as to what exactly the precise trigger of the breakthrough to the Senior Realm was.
