What enlightenment did the Sui and Tang Dynasties give us?

Du Fu, a famous poet in the Tang Dynasty, described the prosperity of Kaiyuan in his poem "Remembering the Time Past": In retrospect, there were still thousands of families in the small town in the heyday of Kaiyuan. Rice is fat and white, and public and private warehouses are rich. There are no wolves and tigers on the road in Kyushu, which is a good day to travel. Wan Qi, Lu Mao, driver class, male plow female mulberry. From the poems, we can get a glimpse of the prosperity and prosperity in the Kaiyuan period. In the Tang Dynasty, agriculture developed greatly, mainly as follows: 1. In production practice, farmers in the Tang Dynasty improved the structure of plows, made curved plows and created new irrigation tools. 2. large-scale water conservancy construction. A series of irrigation canals were dug in the Yellow River and Yangtze River basins, and old canals and weirs were restored. 3. A lot of wasteland has been opened. The working people have created a lot of wealth, and the Tang government collects a lot of grain and cloth from farmers every year. The population increased greatly, and the number of households in Xuanzong was nearly three times that in Taizong. The handicraft industry in the Tang Dynasty also developed greatly, mainly in: 1, and the silk industry: Dingzhou, Yizhou and Yangzhou are all famous for the special patterns of brocade. There are many varieties, one of which is Hua Niaowen Brocade, which is centered on colorful flowers and surrounded by birds and scattered flowers. Gorgeous and moving, reflecting the superb brocade technology in the Tang Dynasty. 2. Ceramic industry: white porcelain in Xingzhou is as silver as snow, and celadon in Yuezhou is as jade as ice. It also created the famous "Three Colors of the Tang Dynasty". Paint colorless glaze on the white pottery tire, and then decorate it with yellow, green and cyan. The color is bright and beautiful. 3. Paper industry: Xuanzhou and Yizhou are famous for their paper. Chang 'an in the Tang Dynasty is not only the political center of the whole country, but also the center of economic and cultural exchanges among Asian countries. There are ethnic minorities from all countries and people from all Asian countries here, making it an international metropolis. The Tang Dynasty is an important development period of China's multi-ethnic unified country. At that time, the ethnic groups were further integrated, the economic and cultural exchanges between ethnic groups were closer, and the territory of the Tang Dynasty was unprecedented. In the Tang Dynasty, there were Turks and Uighurs in the north and Brown in the northeast. In the Tang Dynasty, Duhu and DuDu were successively established on the northern border. There are Nanzhao and Tubo in the southwest; Nanzhao, the ancestor of the Yi and Bai nationalities, once received the title of King of Yunnan in the Tang Dynasty. Tubo, the ancestor of Tubo, married Tang for many times and maintained a close relationship of "harmony as one family". At that time, all ethnic groups in the frontier made outstanding contributions to the development of the Chinese nation. During the Tang Dynasty, China's economy and culture were in an advanced position in the world, and its external transportation was more developed than in the past. Tang's contacts with Asian and European countries are unprecedented. The Tang Dynasty maintained friendly relations with Silla on the Korean Peninsula. Tang had a close relationship with Japan and had a great influence on Japan, which was influenced by China culture from the political system to the living customs. There were frequent diplomatic exchanges between the Tang Dynasty and the Indian Peninsula, and Xuanzang's westward journey became a much-told story in the history of Sino-foreign relations. The Tang Dynasty also had a good relationship with Persia and grain in West Asia. Ceramics from China are continuously transported to this area, and goods from West Asia are also imported to China.