Chinese President Xi Jinping will meet with US President Donald Trump in the US this week. China-US cooperation carries implications far beyond their bilateral ties. Perhaps one of those who knows this best is China's Permanent Representative to the UN Ambassador Fu Cong. In a one-on-one conversation with CGTN's Tian Wei, he talks about the global implications of relations between China and the United States. He also cites reasons why the UN remains the world's top convenor in fixing global challenges such as security, development and human rights.