When you are standing on any street in Greenway, be it the deepest most oppressive of places, the moment you look up to the borderlands towards the Black Forest, you could see the verdant green glow.
That was the 'Verdant Barrier', an enchanted wall built out of a gray crystal rock unique to the south of the Empire and thirty thousand slabs of elven rune bricks were encrusted in it as it protected the city from being consumed by the forest. It had a very unique, repelling effect against the cycle of life and that ensured that the land was completed separated from the Black Forest, and this scene was one of Greenway's trademark views.
Of course, Hao Ren and the rest too were drawn in by that great wall that was visible no matter where you are, and now upon listening to Awenna's description of the city and the Black Forest, his interest was piqued even more.
