The Yellow River, as the golden channel of waterway transportation in the past dynasties, played a very important role in the trade exchanges between Mongolian and Han. Since the Yellow River enters Laoniuwan, the canyon is high and deep, and the river is turbulent, the fleet from the upstream reached Laoniuwan, they needed to change experienced boatman and continue to go south, Laoniuwan wharf becomes a temporary berth then. At that time, there were many ships, restaurants and inns all over the place. Today, the remains of the ancient wharf and the stone road leading to the ancient wharf are faintly visible, which witness the historical changes of Laoniuwan.
