I'd like some credible source for the Japan claim, please. Per https://www.jluggage.com/blog/fact-check/japan-buying-oil-in-yuan/ https://www.jluggage.com/blog/

I'd like some credible source for the Japan claim, please. Per https://www.jluggage.com/blog/fact-check/japan-buying-oil-in-yuan/ https://www.jluggage.com/blog/fact-check/japan-buying-oil-in... it is a rumour.