Because although the trade economy was developed and literature reached its peak in the Song Dynasty, it was in a position of advocating literature economy, but it happened that it did not pay attention to the training of military commanders. Therefore, in terms of military strength, it is far less than those ethnic groups on horseback, and naturally it has been defeated repeatedly.

The Song Dynasty was an era of ancient economic prosperity. At that time, the people's life was relatively rich, because the economy of the Song Dynasty was developed and there were few famines, and the literary level of the Song Dynasty was also the highest in all previous dynasties. However, everyone has a problem. The economy of the Song Dynasty was so developed, but it was still oppressed by nomadic peoples such as Khitan, Mongolia and Jurchen, and it never turned over, because the Song Dynasty only paid attention to the development of economy and literature, but forgot to develop it.

During the Song Dynasty, the imperial court exercised stricter control over the army, suppressed those folk martial artists and praised the development of literature. So at that time, few people were willing to learn martial arts, and many people chose to study in business, so foreign trade was also very frequent at that time, which promoted the economic development speed of the Song Dynasty. Because the military attache is restricted, the nomadic people in the north advocate force. When they met their soldiers, Song Jun was so vulnerable that he never won.

Therefore, it is not advisable to say that an era pays too much attention to literature and commerce and not to martial arts, because once you encounter foreign aggression, your literary background and economic strength are developed again, which is useless in the war. Therefore, it is necessary to develop military combat forces.