IMO, It's possible that Yuan may replace USD after the covid19 pandemic where all nation's economy is suffering due to the global economic recession since as of the moment we are still in recession and only a few just started to open their economy and first of these was China. While we are still in recession China already started to recover and the US is still in a battle to defeat the pandemic and that makes China become ahead of us.

Though China may be ahead for the meantime US will be able to cope up for they're the most powerful country in terms of military and etc, as soon as the US defeated the pandemic rest assure they will do an intensive action in all aspects including their economy and will prove again that they are still the strongest.