China's President Xi Jinping (L) and U.S. President Barack Obama walk up the colonnade of the White House during an arrival ceremony at the White House in Washington, September 25, 2015. REUTERS/Kevin Lamarque

China’s President Xi Jinping (L) and U.S. President Barack Obama walk up the colonnade of the White House during an arrival ceremony at the White House in Washington, September 25, 2015. REUTERS/Kevin Lamarque

China's President Xi Jinping (L) and U.S. President Barack Obama walk up the colonnade of the White House during an arrival ceremony at the White House in Washington, September 25, 2015. REUTERS/Kevin Lamarque

August 26, 2016 1:32 AM (UTC+8)