DALI, CHINA - MAY 20: Unidentified Chinese farmers work hard on rice field on May 20, 2012 in Dali, China. For many farmers rice is the main source of income (around $800 annual).
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DALI, CHINA - MAY 20: Unidentified Chinese farmers work hard on rice field on May 20, 2012 in Dali, China. For many farmers rice is the main source of income (around $800 annual).