Read the following materials and answer the questions. Material 1: Tang Shiyun: "There is a moonlit night in the world, and the second rogue is Yangzhou." "(Yangzhou) the night bridge is bright.

(1) Yangzhou was an important commercial city in the Tang Dynasty, with a prosperous night market. In the Song Dynasty, vendors peddled goods by singing. The government no longer restricts the location of commercial activities; "Grass Market" has relatively perfect catering service facilities.

(2) Reason: After the industrial revolution, it is urgent to open the China market. Economically: China is a natural economy with a closed nature; Politically: big country psychology, beware of external interference.

(3) Politically, autocratic monarchy was strengthened and feudal rule was decadent; Economically, the natural economy is dominant, and the embryonic development of capitalism is slow; Culturally, cultural autocratic policies and Confucianism dominate; Diplomatic closed-door policy.