China's change on one child policy will have various future effects 11/16/2013 - 00:00 China is finally dropping its one-child policy for around one-third of the population: couples that are urban and Han Chinese in which one parent is an only child. (Couples that are rural, non-Han, or where both parents were only children were already allowed to have two kids.) The policy will remain in force only for urban Han parents who were both the product of two-child homes—a fairly small proportion.Bank of America estimates that the change will lead to about 9.5 million new births a year, but just as importantly the change largely marks the end of a 30-year-old social engineering experiment that changed the face of China’s society and played an important, if contentious, role in its re-emergence as an economic powerhouse. Quartz has reported extensively on what such a change might mean, for better and for worse.