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New middle class: China consumers boosting economy

Hundreds of millions of people around the world are escaping poverty and becoming what's loosely termed "middle class".

In China, people have been moving out of the countryside into the cities for decades.

The difference now is that they are not just migrants but consumers, and they are rapidly becoming a key factor in the world's second largest economy.

As part of the BBC News New Middle Class series, John Sudworth reports from Zhengzhou.

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