Do you have any sources for that? When I searched "DeepSeek crypto mining" the first result was your comment, the other results were just about the wide tech market selloff after DeepSeek appeared (that also affected crypto). As far as I know, they had many GPUs because their parent company was using AI algorithms for trading for many years.
You know crypto mining is illegal in China right? Of course they avoid mentioning it. Discussion boards in China had ex employees mention doing crypto mining but it’s all been wiped.
https://en.wikipedia.org/wiki/High-Flyer