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In China, a country of more than a billion people, the search for kidnapped children has been described by many as hopeless.

For one family, however, perseverence has paid off. Peng Gaofeng, the returned boy's father, ran from pillar to post in efforts to locate his son, organising other families who, like his, have had children kidnapped.

Al Jazeera's Melissa Chan reports from Shenzen, in southern China.

Source: Al Jazeera