premise: China is a major country with high economic growth.
hypothesis: China . China has had the largest economy in the world for much of the last two thousand years , during which it has seen cycles of prosperity and decline . Since the introduction of economic reforms in 1978 , China has become one of the world 's fastest-growing major economies . , it is the world 's second-largest economy by nominal GDP and largest by purchasing power parity ( PPP ) .