Since the Eastern Han Dynasty. China has been divided and chaotic for more than 300 years. In the Sui Dynasty, it tended to be unified. The cultural achievements of Sui government are to advocate Buddhism, respect Confucianism and collect ancient books extensively. The monument in scientific and technological engineering is the construction of the Grand Canal that runs through the ages. Because of advocating the imperial examination system. Increase the number of readers. Confucian classics are widely circulated. Especially at that time, there were many monasteries and monks, and the copying of Buddhist scriptures emerged in an endless stream, which made people urgently need a method of copying pictures and texts quickly, thus inspiring the invention of printing.

In the Tang Dynasty. In the history of China, the heyday of culture and technology appeared. In the social atmosphere of national unity, political openness and cultural prosperity, people have a great demand for books. All these provided good conditions for the birth of printing. There are two social factors that promote the invention of printing: one is the prosperity of Buddhism. Need a lot of Buddhist scriptures and paintings; Second, the implementation of the imperial examination system stimulated more people to study. The demand for books in society has greatly increased. Sui and Tang societies all had these two conditions.

With the development of social economy, the improvement of writing tools such as paper and ink has promoted the spread and popularization of knowledge, and the demand for books has increased. Simple copying can no longer meet people's reading needs.

Please accept it if it helps. Thank you.