But when China trades with Russia, they often trade in Euro or Dollar..
Would you trust the yen? Or the ruble?
Would you trust the yen? Or the ruble?
https://www.reuters.com/world/asia-pacific/exclusive-russia-...
Doesn't that say something about them not trusting each others currency?
Would you trust the yuan? Chinese people can't exchange to other currencies freely, or transfer money abroad. It's effectively held up by a captive audience (subjugated people).