"The key to the modernization of our army lies in training able troops. Without them there will be no modernization of our army. We have all along stressed the human factor in war. Bravery, consciousness, and the spirit of sacrifice are a part of the human factor, on which we must continue to lay due stress, but they are not the whole. The whole of the human factor should include vigor in health, spirit, knowledge, and ability. While training modern military forces, we must pay particular attention to this point. To train modern military forces, the most important approach is to make the ranks of cadres more revolutionary, younger in average age, better educated, and more professionally competent."