As the palisade curved south at its eastern end, toward the mouth of the Yalu River, it was also meant to keep settlers from the Yalu River valley, which the early Qing government intended to maintain as an unpopulated "no man's land" along the Joseon border.
The palisade, curving south at its eastern end toward the Yalu River's mouth, served to keep settlers from inhabiting the Yalu River valley. The early Qing government intended this region as an uninhabited "no man's land" along the Joseon border.