Will China dominate the XXIst century?

People's Republic of China, Deng Xiaoping, South China Sea, Spratly Islands, one-child policy, to flex its muscles, reservists, shipping lane, fish stocks, to vie for control, to lay claim to the islands, military exercises, to become increasingly vocal about something, giant with feet of clay, to curb growth, ageing population, to plummet, people of working age, ballooning population, swayed in a layer of smog, to exert a huge toll, to succumb, to plague, GDP (gross domestic product), to be up in arms