[ Zhongli is not an expert on any of the happenings here by any means of the word. So in order to really gain more of an understanding he often frequents the library from time to time to do some reading.

Not needing to sleep or even eat he's often there for long periods of time, wandering the stacks in search of his next book. It on such a day that he happens upon the other man, his own curiosity getting the better of him. ]

That is quite extensive research. Have you tried asking others for assistance? Perhaps there is someone here with the knowledge that might help speed up the process on finding an answer.