Jainzar is correct, Matrix ITA search is interpreting fare bucket A as First. In reality A is a deeply discounted promotion fare bucket for premium economy.
The premium economy fare booking into A is not a bad deal in itself, it is cheaper than many similar offerings from say LH or AF and it has the advantage of a direct routing. This is part of the current premium economy fare sale being run by SAS.
The cheapest business fare at the moment is a Z fare pricing in at 23k RMB for one adult.
You could always try the premium economy fare and then optiontown...