A man walks past an electric quotation board flashing key indexes of the Tokyo Stock Exchange (TSE) in front of a securities company in Tokyo on February 4, 2014. Tokyo stocks fell 2.62 percent Tuesday morning after weak US manufacturing data sent Wall Street and the dollar tumbling, a decline that puts the Nikkei into correction territory after its huge rally last year. - 

Today, the Hang Seng index in Hong Kong fell two point nine percent and Japan's Nikkei fell four point two percent.  But it's not just Asian markets picking up a psychological cue from New York. The BBC's Duncan Bartlett has been watching this from Tokyo.

Click play above the hear the whole interview.

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