China's President Hu Jintao (R) and U.S. President Barack Obama (L)

China's President Hu Jintao (R) and U.S. President Barack Obama (L) listen to national anthems during a welcome ceremony at the Great Hall of the People on November 17, 2009 in Beijing, China. Obama is on an official nine-day, four nation, Asia tour during which he has visited Japan and attended the APEC Summit in Singapore before heading to China. Following his vist to China, where he is expected to discuss the economy, trade and climate change, he will head to South Korea.