What is the social significance and cost of the Tang Dynasty in the whole history of China?

The Tang Empire was the most civilized and powerful country in the world at that time, and Chang 'an, the capital, became a cosmopolitan metropolis. China's highly developed culture and prosperous economy make people from all over the world, whether businessmen or diplomatic envoys, proud to be China people. At that time, not only the capital Chang 'an, but also "expatriates" from all over the country settled here, especially emerging commercial cities, such as Guangzhou, Yangzhou and Quanzhou, each with more than100-200,000 foreigners. The Tang Dynasty was a rare open dynasty in the history of China. It is a highly confident dynasty. It neither discriminates against foreigners, nor caters to them, and treats them equally. It is a big country with graceful demeanor and kingly demeanor. Foreigners in China enjoy the same civil rights as people in China, just like people in China are at home. They can not only make a fortune, but also be an official in politics. Many expatriates from the Arab Empire, Persia, Japan and Korea hold official positions in the central government and local governments. In addition to accepting a large number of foreign immigrants, the Tang Empire also received a batch of foreign students to study advanced culture in China. Only Japanese students at public expense received seven batches, each with hundreds of students. Private self-funded international students far exceed this figure. After these Japanese students returned to China, they carried out a "great change" in Japan, imitating the Tang Dynasty from laws and regulations to clothing customs, which made the Japanese nation in the primitive tribal state leap forward for a thousand years. The influence still exists today, and the light of the Tang Empire shines so profoundly on the history of China and the world.

The Tang Dynasty in Zhenguan period was the golden age of China. Commerce extends in all directions, agriculture has a bumper harvest year after year, industrial skills are exquisite, all walks of life are thriving, and comprehensive national strength has been significantly improved. A prosperous Tang Dynasty haunts China people and stirs many hearts of reading history!

During the Zhenguan period, the prosperity of Zhenguan dynasty was unmatched by any dynasty in China. Throughout several powerful dynasties in China's history, the symbol of prosperity is nothing more than enriching the country and strengthening the people. Only the Tang Dynasty made outstanding achievements in deep civilization (mainly referring to system and cultural inheritance). The wealth of the Tang Dynasty empire is evidenced by a poem by Du Fu, a great poet: "In retrospect, in the heyday of Kaiyuan, there were still thousands of small towns with greasy meals and rich public and private granaries." In line with the high development of productive forces, the international prestige of the Tang Dynasty also reached its peak, and foreign wars were successively won. It has maintained a continuous offensive posture for more than 100 years and its territory has expanded extremely. The vast territories of Northeast China, Mobei and Western Regions were successively incorporated into Chinese territory, and the western territory reached the east bank of Aral Sea (now Tashkent City in Central Asia). In addition to the fruitful achievements known by these people, the civilization of Zhenguan Dynasty was second to none in the world at that time.