That`s too bad for the rest of the world
Highly unlikely. The path for a "Malthusian catastrophe" hyped up by population control obsessives in China is long gone at this point. Now the one child policy is having a distorting defect on gender ratios and is very much a negative policy.
Absolutely, the number of Chinese people aged 0-14 is now about 250 millions, rather than over 350 millions at the start of the policy.
http://esa.un.org/unpd/wpp/Graphs/2_Probabilistic%20Projections%5C1_Population%5CPopulation%20Aged%200-14%5CChina.pngActually, most countries outside of Africa has either peaked or ar about to peak in terms of the number of children born. The number of Indians aged 0-14 likely peaked a few years ago
http://esa.un.org/unpd/wpp/Graphs/2_Probabilistic%20Projections%5C1_Population%5CPopulation%20Aged%200-14%5CIndia.png. Actually, the countries outside of Africa that will see an increase in their young population are not really the ones you would expect..