City wall introduction: Shangcun is a relocation project for the development of Laoniuwan tourist attraction and is the current settlement place of Laoniuwan people. There is a small valley not far to the north of the village. The small river flows into the big river to the west and becomes a tributary of the Yellow River. On the south bank of the river is the Great Wall, which is undulating with city walls, piers, and castles. It finally goes west and stops at the Yellow River. The north bank of the creek is Inner Mongolia, and the west bank of the Yellow River is also Inner Mongolia. Laoniu Bay lies quietly on the bank of the Yellow River. On the side of the creek, there is a peaceful atmosphere in the magnificent Shanxi and Shaanxi gorges.