They already have digital cash and contactless payments and its all FIAT. The reason for crypto wont be because they want to move balances digitally because thats been possible and in majority for many years. It was possible to remove cash without crypto, the vital part is decentralisation and thats the real jump between the possible and what is now a very fragile centralised system where economies bend to politics more then capitalism.
China is of course not really about capitalism or anything that represents an individual.
I understand that digital fiat has long been used, but digital fiat is under the direct control of banks (in the case of China, it is controlled by the government). If necessary, your balance will be turned into zero. Therefore, crypto has undeniable advantages in this sense, and in case of crisis, they become more in demand.