Heaven Official's Blessing: Tian Guan Ci Fu (Novel) Vol. 1

by Mò Xiāng Tóng Xiù

The heavenly officials of the Upper Court had gotten together and set up an array that could instantaneously allow the consciousness to communicate and pass on messages.

This was the quote that made me realize why three rewatches of HOB still left me fuzzy on key details to understanding the show. It’s because it’s clearly explained here in the source material and wether or not it gets explained in the adaptation varies. Which is to say, I was relieved I was about to get all the answers I was looking for