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I highly doubt that the Bank of China will introduce its own crypto coin. I think they are interested in introducing blockchain technology into their system rather than creating their own digital currency. China already has a digital payment system which looks to be working perfectly with less issues. Introducing blockchain technology to their already existing digital payment system will further address the challenges seen in the system. China is rather interested in blockchain technology rather than developing their own digital coin. I think you do further research and analysis before making some assumptions.
I personally don't see why the Peoples Bank of China shouldn't issue their own crypto coin. Are you familiar with some official statements in that regard?
As far as I know, they are against
decentralized crypto currencies because, in their view, such currencies are too unpredictable and the use of them may lead to chaos. So, they are going to launch centralized, yuan-pegged, stable digital currency of their own. Imo it has more to do with ideology than with economy. Authoritarian regimes are always afraid of freedom, and people who support them think that only strong central power can save us from chaos.