So in China, no matter how many Us there are, it is fundamentally impossible to use them, then what was the point of setting up ETFs in Hong Kong before?

Is trading cryptocurrencies illegal? No wonder that Dongguo's current AI, artificial intelligence, chip hardware, etc., have been left far behind by the United States. There is hardly any room for improvement.
Now that trading cryptocurrencies is not allowed, does that mean we should trade A stocks instead, which will definitely lead to losses and being exploited by others? $BTC