In the early Tang Dynasty, Emperor Taizong Li Shimin ordered Yuwen Kai, the most famous architect at that time, to build a new capital. After careful investigation and site selection, Yuwen Kai designed a new capital in the southeast of Daxing City, the former capital of Sui Dynasty, which will be Chang 'an City in the future. Chang 'an City adopts the design of left and right symmetry. Design into a city that combines inside and outside. The inner city is the imperial city, and the south gate is Zhuquemen, which is equivalent to Tiananmen Square in the Forbidden City in Beijing. The central axis street opposite the south gate is Suzaku Street. The existing city wall ruins surround Chang 'an City in Ming Dynasty. It is not a line with the central axis of Chang 'an in Tang Dynasty. However, due to the huge momentum of Chang 'an in the Tang Dynasty, Suzaku Street, as the main road of Chang 'an, has a far-reaching influence on its function and name and has been preserved to this day.