1) China has experienced unprecedented economic growth over the past 40 years since economic reforms began, with annual growth rates of around 9% leading to over a tenfold increase in living standards. 
2) This rapid growth has been driven by China's demographic dividend as the working-age population increased and supported overall growth. However, China's dividend is disappearing as the population ages.
3) To maintain economic growth, China must transition from relying on its demographic dividend to implementing further economic reforms that can drive productivity and unlock new sources of growth, such as reforming the household registration system to increase labor mobility.