Within the next 20 years no country in the world has the capability to challenge the leading status of US currency as it is backed by the most advanced technology and the most sophisticated monetary system in the world. China GDP per capita amounted to USD9,770.85 (United States USD62,794.59) so this figure is telling the naked fact that China actually still not a rich country. Another word, China still not producing enough GPD per capita to sustain its own internal consumption so in nowhere Renminbi can be used as the world's reserve currency. Euro for obvious reason will not last long as cartel agreement will never work in real world unless they can do away with self interest for the benefit of common interest. American will be replaced by Chinese was simply a fake story invented by Trump to win vote as no economic evidence can prove that China has the financial capability to challenge US.