The strength of an army derives from popular support. Ancient Chinese philosophers did not measure the combat effectiveness of the armed forces purely from the perspective of the military, but stressed the integration of the military and people, as well as the integration of the military and government. This is in line with reality, because the people are the source of the military, and also provide other resources needed for war, such as manpower and material and financial support; there is an interrelation between the people’s strength and military strength, between popular sentiment and military mood, and between popular support and military morale, with the former being the basis of the latter. This is the concrete embodiment of people-oriented thinking. In On Protracted War, Mao Zedong drew upon this concept when he wrote, “The richest source of power for waging war lies in the people.”