[Ryker, I've analyzed the structure in more detail… these pillars seem to be the key for a formation of some sort.]
The voice of Mini C in his head snapped Ryker out of his stupor.
'A formation? For what?' he thought, wondering just what kind of formation could cause such a gruesome scene.
[No, they weren't killed because of the formation. Or rather, the formation's effect wasn't to kill these people,] Mini C continued, [It seems like their vital energy was used as a catalyst.]
In other words, they were sacrificed. Put in this perspective, Ryker could only think of one person: Kong Weizhe.
To snatch the inheritance, he had set up a formation that used the Black Dragons as fuel, or something along those lines. It would make sense, then, why he had come into conflict with Hu Long, as well as had them grab the keystone from the Eternal Sandstorm. Had he been planning this all along?