As many as 70000 Chinese children are abducted and sold each year. Some end up in the US.
Child-trafficking rings have become 'more sophisticated', using the internet to sell abducted babies in China.
Claims that a newborn baby boy was offered for sale for 60,000 yuan (US$9,200) on social media has led to six people being arrested in.
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Police say they stopped the sale of one baby and were trying to track down at least one more.