Discounts are generally available in department stores - though the bargaining process tends to be a bit more sophisticated than the wild gesticulating and facial expressions you get with your average owner/operator retailer.

I'm have limited experience of Parksons, but I suspect that if you're buying something over a few hundred RMB then there'll be a discount to be had. Don't start trying to bargain over something that costs RMB18!!

You comment that it's Western. True, but there are discounts to be had in Western department stores in the West.

There's only one way to find out - and that's to ask.

Nothing ventured, nothing gained.