In the small, gray-tiled courtyard, Yang Hongli rose to see Chen Yu off after they finished discussing modifications to the array diagram.
"Junior Brother, take care. After you cross Qinghe Bridge, make a left. Not far from there is a small market where the local Cultivators gather. It's not as bustling as the South Bridge Market in the Outer Sect, but it still has plenty of rare treasures worth a look."
A fine, steady rain pattered against the gray tiles and stone walls. Chen Yu took the umbrella Yang Hongli offered, opened it, said his goodbyes, and prepared to leave.
"I've seen you come to me time and again to ask about the principles of Arrays, Junior Brother. I figure you must have some interest in them. Here, take this introduction to array diagrams. If you have any more questions, feel free to come find me." Standing under the eaves, Yang Hongli, dressed in blue scholarly robes, pressed a blue-covered book into his hands.
