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by grault 4627 days ago
Maybe the bid-ask spread in that area for USD is that wide :D You might see something like this

        BUY       SELL
  USD   6.1538    13.3636
And it makes sense immediately. You have USD3.25, you buy 20元 for that. Pay for various resources, get back 150元. Well, you can get only USD11 for that.