This central plains financial and material resources is really not what he can imagine. This secret passage should have been built during Yuan Shao’s period. Whether Yuan Shao built this secret passage to deepen friendship with Wu Wan or to take the opportunity to annex Wu Wan to the north is difficult to say clearly. But anyway, since Ta Dun has set foot on Bailang Mountain now, it is in the same boat with Yuan Xi and Yuan Shang, and everyone is an ally. This secret passage is now well known by Ta Dun, so it becomes public.
After visiting the secret passage, Ta Dun also returned to the camp, while Yuan...