Here's devaluation of currencies against usd. If you want foreign reserves, would you hold renmibi or usd?
I am not a super fan of usd (Bitcoin and gold for the win), but let's be realistic. What are real alternatives for central banks? Especially usable on international markets as collateral.
https://nostrcheck.me/media/public/nostrcheck.me_9485108349053656351687201357.webp