Trump said at Davos that we must "prevent China from touching cryptocurrency," which is a bit unnecessary.
In fact, there is no need to prevent it, because China has already actively rejected it.
For the past few years, the mainland's attitude has been very stable and clear: strict regulation, deleveraging, and banning speculation.
From shutting down mining farms to cracking down on speculation, a series of measures are in place to prevent cryptocurrency from becoming popular in the mainland.
So, the president is overthinking it; China is busy developing physical and digital renminbi 🙂