The Politburo, the ruling Communist Party's 24-member decision-making body led by President Xi Jinping, is expected to assess the economy's outlook at a gathering by the end of this month

On Monday, after Xi's visit, Beijing warned countries against signing trade deals with the U.S. "at the expense of China’s interest."

Standing outside his friend’s cupcake shop, he says Donald Trump’s levies are a sign that America feels threatened by China’s rise. America’s power is declining, he says. “What you feel in today’s world is that hegemony is very hard to achieve.