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BEIJING, CHINA: A woman cycles pass a billboard encouraging couples to have only one child, along a road leading to a village in the suburb of Beijing, 25 March 2001. China has reaffirmed that it would continue enforcing its one-child policy to limit its huge population to 1.6 billion by 2050. AFP PHOTO/GOH Chai Hin (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

BEIJING, CHINA:  A woman cycles pass a billboard encouraging couples to have only one child, along a road leading to a village in the suburb of Beijing, 25 March 2001.  China has reaffirmed that it would continue enforcing its one-child policy to limit its huge population to 1.6 billion by 2050.    AFP PHOTO/GOH Chai Hin (Photo credit should read GOH CHAI HIN/AFP/Getty Images)

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China, poster promoting one-child policy

China, poster promoting one-child policy

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TO GO WITH AFP STORY China-population-social-family,FEATURE BY CAROL HUANG This picture taken on September 7, 2012 shows a boy sitting in a two-wheel trolley as he is pulled along a street in Beijing. China's elderly face increasing uncertainty three decades since the one-child policy took hold,with no real social safety net, the law has left four grandparents and two parents with one caretaker for old age -- and bereaved families with none. AFP PHOTO/WANG ZHAO (Photo credit should read WANG ZHAO/AFP/GettyImages)

TO GO WITH AFP STORY China-population-social-family,FEATURE BY CAROL HUANG 
This picture taken on September 7, 2012 shows a boy sitting in a two-wheel trolley as he is pulled along a street in Beijing. China's elderly face increasing uncertainty three decades since the one-child policy took hold,with no real social safety net, the law has left four grandparents and two parents with one caretaker for old age -- and bereaved families with none.         AFP PHOTO/WANG ZHAO        (Photo credit should read WANG ZHAO/AFP/GettyImages)

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BEIJING, CHINA - APRIL 02: Young orphaned Chinese children drink milk from bottles at a foster care center on April 2, 2014 in Beijing, China. China's orphanages and foster homes used to be filled with healthy girls, reflecting the country's one-child policy and its preference for sons. Now the vast majority of orphans are sick or disabled. China says it has 576,000 orphans in its child welfare system though outside groups put the number at closer to a million. The parents who abandon them either cannot afford treatment or feel an inability to cope with raising a child who has special needs. In many cases an unwanted baby is never registered so the parents can skirt the one-child policy if they try for another. (Photo by Kevin Frayer/Getty Images)

BEIJING, CHINA - APRIL 02: Young orphaned Chinese children drink milk from bottles at a foster care center on April 2, 2014 in Beijing, China. China's orphanages and foster homes used to be filled with healthy girls, reflecting the country's one-child policy and its preference for sons. Now the vast majority of orphans are sick or disabled. China says it has 576,000 orphans in its child welfare system though outside groups put the number at closer to a million. The parents who abandon them either cannot afford treatment or feel an inability to cope with raising a child who has special needs. In many cases an unwanted baby is never registered so the parents can skirt the one-child policy if they try for another.  (Photo by Kevin Frayer/Getty Images)

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TO GO WITH: China-politics-economy, FOCUS by Benjamin DOOLEY This photo taken on June 24, 2015 shows a woman carrying a baby in Yanji, in China's northeast Jilin province. China's Communist leaders gather on October 26 to hash out a new Five Year Plan to battle slowing growth, and analysts say they must choose between such outmoded concepts as GDP targets and reforms that could include the one-child policy. AFP PHOTO / Greg BAKER (Photo credit should read GREG BAKER/AFP/Getty Images)

TO GO WITH: China-politics-economy, FOCUS by Benjamin DOOLEY
This photo taken on June 24, 2015 shows a woman carrying a baby in Yanji, in China's northeast Jilin province. China's Communist leaders gather on October 26 to hash out a new Five Year Plan to battle slowing growth, and analysts say they must choose between such outmoded concepts as GDP targets and reforms that could include the one-child policy.  AFP PHOTO / Greg BAKER        (Photo credit should read GREG BAKER/AFP/Getty Images)