India has ceased utilizing U.S. Dollars to buy (Russian) oil. Instead, India is using the Chinese National Yuan (CNY).
This is a massive sign that countries around the world have begun "de-dollarization."
It is also a concrete sign that relations between India and China have improved to such a degree that India feels confident enough to begin using Chinese cash for international transactions.
Lastly, as other countries see that a large nation like India using non-dollars for OIL, trade, those other countries will feel more confident in doing the same.
Many folks do not understand the implications of this: The U.S. is being pushed "out-of-the-loop" and will no longer be able to apply "sanctions" around the world, as fewer and fewer countries use the U.S. Dollar for international trade.
