After the Western Zhou period, not only did the Royal Family have armed forces, but the lords of the various enfeoffed states also had their own military forces, leading to chaotic wars among the states during the Spring and Autumn and Warring States periods. At this time, significant changes occurred in the military system. Various lords frantically expanded their armies, abolishing soldier status restrictions and implementing conscription at the county level. The Qin State introduced a system of granting land and nobility titles based on military merit, enhancing the status of commoners. Those previously without the right to serve in the military were now granted that right. The system where only citizens of a state were conscripted was replaced by a general conscription system.