what if Taiwan want to buy Typhoon?

I think that because the Typhoon developed by four Europ countries, so if it be sold to Taiwan, there will be little reaction out of Beijing. You hard to image Beijing will dare to sever diplomatic relations with four main European countries.
I am sorry, this thread looks like half concerning aircraft half concerning politics.

Has Taiwan expressed an interest in the Typhoon or is this just a speculative question?

Taiwan are interested in any advanced fighter aircraft only if you are willing to sale.