China's policy of 1 child a couple has a great say why China won't fulfill its potential.

China now have only 20% children upto the age of 17 and it has about 40% population above 50%. The rest of the population can be regarded as working class but what will happen after 10 or 20 years from now, everyone can understand. +50% of Chinese will be above 50 years old and the decline will continue. The situation will be much like Japan and China would never get to where it aims to reach.