Historical Changes of Chang 'an in Sui and Tang Dynasties and Beijing in Ming and Qing Dynasties Architecture is one of the most proud achievements of civilization created by human beings and the crystallization of cultural thoughts. The architectural layout design and artistic style of each era clearly reflect the characteristics of economy, society, science and technology and corresponding engineering materials of that era, and the rise and fall of architecture is always the same as the rise and fall of society. Throughout the history of ancient architecture in China, we can see that, as one of the important symbols of the heyday of feudal society, the architecture of the Tang Dynasty reached a prominent peak, which is characterized by large scale, boldness of vision, lofty style, neatness but not rigidity, beauty but not exquisiteness, creating a unified and harmonious style, showing a broad vision and broad momentum. By the end of the feudal society in Qing Dynasty, the architectural style was dignified and steady, magnificent and varied, but rigid and inflexible, reflecting the color of over-stylization and surpassing the golden jade.

Chang 'an, the capital of Sui and Tang Dynasties

The establishment of Daxing City in Sui and Tang Dynasties and the layout of streets, squares, cities and canals in Guo Cheng

In 577 AD, the Northern Zhou Dynasty destroyed the Northern Qi Dynasty, and in 58 1 year, the Northern Zhou Dynasty destroyed the Sui Dynasty. In June of the second year of Emperor Wendi, Gao Ying, Yuwen Kai and others designed a new capital in Longshouyuan, southeast of Chang 'an City in Han Dynasty. At the beginning of Sui Dynasty, the Duke of Daxing was named Deng Ji, and the county, gate, garden and pool were all named after him. The new capital was also named after Daxing, which was called "Daxing City".

Daxing City has a large scale and neat planning, covering an area of 84 square kilometers. It is divided into Guo Cheng, Miyagi and Imperial City. Build Miyagi first, then Imperial City, and finally Guo Cheng. Guo Cheng is divided into squares by several east-west and north-south streets. These workshops belong to Daxing and Chang 'an counties. The east, west and south of Guo Cheng are the suburbs of two counties. There are government offices, imperial houses, temples and Taoist temples all over the country, each with a city and three canals dug. Miyagi and Imperial City are located in the middle of North Guo Cheng.