Chairman of state-controlled China Construction Bank (CCB) Guo Shuqing poses for a portrait in New York June 7, 2009. Guo on Sunday called on the U.S. government and the World Bank to sell yuan-denominated bonds in Hong Kong and Shanghai to encourage the development of debt markets in those centers and to promote the yuan as a major international currency. REUTERS/Eric Thayer (UNITED STATES BUSINESS POLITICS HEADSHOT)