A Fifth Possibility

"Gen-Kan Hexagram," the system said. "Gen for mountain and Kan for water. Mountain before water, the roads ahead is curved, for forces are mysterious, and the future is unclear."

 Zhao Yu really wanted to know, what does this hexagram mean? If he could understand it, could it point him in the right direction for his investigation? But even if it did not, it was still enough to excite Zhao Yu immensely.

 Thinking back to his investigations, every time the "gen" hexagram appeared, it meant that he was very close to solving the case! This implied that his previous efforts were not wasted, and that his investigation direction was almost definitely correct! With this in mind, how could Zhao Yu not be excited? Could it be, Hao Gang, Han Wenjun, and even Gao Yang, really were related to the Mianling case?!

 In his excitement, all of Zhao Yu’s sleepiness faded away, and he continued to stand in front of the whiteboard as he pondered over the case.