What is the purpose of the Moring excavated from the roof of the town by Perfect International?

That's a hidden task: character level 60 can be triggered, and the name of the task is "Exploring the Wild Legend of Dragon War". NPC: Feilai Town-Feng Shui Master Zhu Jiuyin (138 67 1) Triggered: Trapped Magic Rope/1(1/kloc-3 685) Mirex/1(/kloc)