Xi'an City Wall, also known as Xi'an Ming City Wall, is the largest and most preserved ancient city in China. There are four main gates of Xi'an City Wall: Changle Gate (East Gate), Yongning Gate (South Gate), Anding Gate (West Gate), and Anyuan Gate (North Gate). These four gates are also the original gates of the ancient city. Since the beginning of the Republic of China, a number of city gates have been newly opened for the convenience of access to the ancient city. So far, there are 18 gates in Xi'an City Wall. In order to preserve the beauty of China, Xi'an City Wall Scenic Spot specially launched the "Tangfeng Hanyun·Huafu Courtesy" Xi'an City Wall Huafu Cultural Season. During this period, citizens and tourists wearing Chinese clothes visit the scenic spots and can apply for the free admission experience with the resident ID card (or relevant identification) at each gate of Xi'an City Wall.