China's Vice President Xi Jinping on Friday expressed confidence in the battered US economy and warned against politicising trade issues, on the third day of an official visit by America''s vice-president. Xi made the comments at a roundtable of American and Chinese business leaders hosted by his US counterpart Joe Biden ahead of planned talks with Chinese President Hu Jintao later Friday. "The US economy is highly resilient and has a strong capacity of self repair. We believe that the US economy will achieve even better development as it rises to challenges," said Xi. "We hope that the business people of the two countries will bring forth confidence and work hard to turn challenges into opportunities and embrace change and innovation," he said. Bidden is on a five-day official trip to China.