It's not incompetence, it's overkill. In order to prevent the independence of the Tang Dynasty, Song Taizu took a glass of wine to help the soldiers. Song Taizu himself is a military commander, so he can't see the disadvantages of this institutional arrangement. There were not many troops, but the troops were stronger than Ma Zhuang, and the southern countries were destroyed one after another, and the strategy of going south first and then going north was initially completed. But Song Taizu died suddenly, and his younger brother Song Taizong and his descendants could not compare with him. Song Taizong's northern expedition to Liao failed, and he was injured. The weakness of this system that relies on literature and martial arts is exposed. In addition, Song Taizong didn't move its capital to Luoyang, which made it necessary for the Song Dynasty to maintain a large number of troops to ensure the safety of Kaifeng, the capital. Later, the number of troops in the Song Dynasty continued to expand, but the combat effectiveness dropped sharply ... At the end of the Northern Song Dynasty, even the dying Liao army could not beat it. ..