You will be beaten if you fall behind. This is a reality that China people have strongly felt since 1840. From China, a big country, to being bullied by foreigners at will, one unequal treaty after another, like one chain after another, has bound the people of China breathlessly. After the end of World War II, new sophisticated weapons emerged one after another, and international competition was fierce. In order to gain a foothold in the new world situation and prevent their motherland from being bullied again, the people of China have to make a choice. At that time, the civil war had just subsided, the level of productivity was extremely low, and the development of new weapons needed a lot of money and materials. We must tighten our belts and engage in cutting-edge weapons.