The Northern Sung Dynasty is a very important period in Chinese history. For the first time, the emperors had absolute power of ruling and the development of education was put ahead of that military expansion. Meanwhile, printed books were widely accessible to the commoners due to the improvement of printing and paper making techniques. While this newly available treasure stimulated a keen social mobility, it also created a new social class, the educated elite. This educate elite has been an influential class in all aspects of cultural, political, and economical development in China ever since.
Movable type was invented during this period, but for various reasons, it was not widely adopted in China for many years. Nevertheless, this new techniques might have been influenced the development of printing in other countries.