Military degrees were considered inferior to civil degrees and did not carry the same prestige. The names of civil "jinshi" were carved in marble whereas military "jinshi" were not. While the military and civil services were imagined in Chinese political philosophy as the two wheels of a chariot, in practice, the military examination degree was highly regarded by neither the army or the world at large. Soldiers preferred not having military exam graduates as commanders whose skills in test taking did not necessarily transfer to the army. Final decision for appointment in the military still came down to forces outside the examination system. For example, at the beginning of 755, An Lushan replaced 32 Han Chinese commanders with his own barbarian favorites without any repercussions. During the Qing dynasty, the pre-existing institutions of the Eight Banners and Green Standard Army had their own rules for promotion and left little room for military exam graduates. Some of the few military examination graduates who did achieve distinction include the Tang general Guo Ziyi, the father of the founder of the Song dynasty Zhao Hongyin, Ming generals Yu Dayou and Qi Jiguang, and Ming general turned traitor Wu Sangui. However these are but a minuscule number among those who passed the 282 military metropolitan exams held between their inception in 702 and abolishment in 1901. Even in desperate times of war, the majority of distinguished military figures in Chinese history have come from civil degree holders. The practices of the Ming and Qing military exams were incorporated into physical education in the Republic of China.