Zheng Qing always knew that the Northern District of Beta Town was gray.
This gray is not only the literal gray — the wizards living in the North District 'like' to wear those gray, rough linen robes; the houses in the North District often have their outer walls painted in a pale gray; even the sky in the North District appears gloomier than other parts of the island.
This gray also carries a philosophical meaning — compared to other districts in Beta Town or other wizard societies in the world, the social rules in the Northern District seem less black and white, resembling a Silent Forest disguised as human society, where the Wizard's Codex and the Jungle Rules coexist, and the line between good and bad is somewhat blurred.
Just like the vague and brief conversation between Crow No.3 and the Northern District Wizard in fine robes, Zheng Qing could easily deduce what kind of transaction they were conducting.
