Introduction to Hangu Jiafu: It is located in Xiaoguli, Mengcun Old Village, 17 kilometers north of Lingbao City, and about 2 kilometers south of the ancient Hangu Pass. Jiafu looks like a turret, a brick and wood structure, and a city gate-style building. It is divided into two doors: an inner and outer door. On the outer door, the four characters "Hangu Jiafu" are engraved on green bricks. The city gate is topped by a two-story hilltop-style quadrangular tower. It is estimated that the existing building was built in the Ming Dynasty and renovated in the Qing Dynasty.