There are many ancient cities in China. In history, many ancient cities have city walls. However, many urban walls have been demolished because of urban construction. There are not many cities that can retain complete walls. Among them, the most famous natural is Xi'an. Xi'an is one of the most famous ancient capitals in China. The existing city wall is the Ming City Wall. It was built in 1370 AD and built 13 years later than the Nanjing City Wall. However, to complete the integrity, the Xi'an City Wall is better than the Nanjing City Wall. . The Xi'an ancient city wall has now become a famous tourist attraction in the local area. Visitors can board the city wall from any door and the ticket is 54 yuan. Xi'an City Wall can be walked, or you can ride a bicycle or take a battery car. The length of the city wall is 13.74 kilometers per week. It is more suitable for cycling. In the early days of the founding of the Ming Dynasty, the Ming Taizu Zhu Yuanzhang enshrined the second son Zhu Xi as the Qin Wang, and the Qifeng and Fuzhi were in the same city. Therefore, the scale of the city was huge and strong, and later the Ming and Qing Dynasties were repeatedly repaired and built. intact. In the early Ming Dynasty, as a capital city in Nanjing, its wall was far longer than the Xi'an city wall in terms of length and firmness. However, the city wall of Nanjing was not completely preserved. It is not yet coherent and segmented. The city wall is the old city of Xi'an, and it is also a place where tourists are concentrated. There are many tourist attractions such as the Bell Tower, Drum Tower and Huimin Street in the old city to attract tourists.