Chinese are pushing to make yuan reserve currency so I wouldn't be surprised to see this happening in the next 10-15 years. Yes there is a lot of controversy around Yuan but Chinese economy is growing every year in a vast way
And also keep in mind China holds billions worth of US treasury bonds and notes. And soon... bitcoin.
They already have most Bitcoins at their hands I guess...
I have seen an article somewhere, don't remember, but according to its stats, China holds more than 40% of total BTC in circulation, is it actually true???
When people say China holds billions worth of US treasury bonds, they are talking about the Chinese government. Chinese people might hold bitcoins, but I don't think the government holds any significant sum.