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"But the number of people of working age still stands at almost 900 million, and around 780 million are employed."

"China is a leading country in this field," Shehata said, adding that China is always ready to help friendly countries improve their infrastructure.

"By hammering on each wooden railroad tie, workers can tell how much it has eroded and when to replace them with new ones," Dong said, adding a routine check of the ties is arranged once a month.

"Central banks can act quickly to help ease the tightening of financial conditions by injecting liquidity and cutting interest rates, thus preventing a possible credit crunch," said Tobias Adrian, an official at the International Monetary Fund. "In fact, markets have been anticipating aggressive easing by central banks, as reflected in the sharp fall in sovereign bond yields in many countries around the world.

"China has taken a step ahead in industrial transformation, but the room for cooperation is huge," Chen said.