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Nearly half of Chinese millionaires plan to move out of the country in the next five years—a flight that could add to worries over the country's economy, as more money moves offshore rather than being invested or spent in China. According to a study from Barclays and Ledbury Research, which polled more than 2,000 people worth $1.5 million or more from 17 countries, 47 percent of Chinese millionaires plan to emigrate, while another 20 percent said they don't know if they will move. Read MoreTop cities for multimillionaire second homes

That's the highest rate of planned millionaire flight in the world, topping Qatar at 36 percent and Latin America at 34 percent.



The study supports a finding from Hurun Report earlier this year, which said 64 percent of Chinese millionaires have either emigrated or plan to emigrate.

When asked why they are leaving China, 78 percent of respondents in the Barclays and Ledbury study said they were seeking "better educational/employment opportunities" for their kids. Seventy-three percent said they were looking for "economic security" and 72 percent said they wanted a "desirable climate." Their top destinations are Hong Kong, Canada and the U.S. Read MoreChina creates 40,000 millionaires

