Could this be Bitcoin and the thinking behind China's embrace of Bitcoin?
Doubt it. Bitcoin IMO has the Potential, but it isn't nearly big enough to even be on the Table.
They are probaly thinking more in the direction of a currency like the Euro only bigger. The Worldo

Not big enough ??
Look at the hash power.. also there already billions maybe trillions of satoshi in circulation.
How this can not be big enough ?
Bitcoin is digital gold, remove the need of fiat currency and paper gold..
I dont know if it will be used by chinese govt, but imo, it's the best option availlable so far