The current Zhengyang Gate, in the Ming and Qing Dynasties, was the main south gate of Beijing's inner city, built in the 17th year of Ming Yongle (1419), later renamed Zhengyang Gate, commonly known as (front door). The existing city building covers an area of 3047 square meters, with a height of 43.65 meters, and is located on the brick city platform. It is the tallest and most spectacular Beijing city gate building. Zhengyangmen is on the south central axis, with a superior geographical location. The southeast side is the railway museum, and the south side is the famous Qianmen Street business district. It is composed of N many alleys, with a long history and distinctive characteristics. The scenery inside the alley is beautiful, and the gates of the gates are simple and elegant, reflecting the style of the old Beijing ancient capital.