Some shopping malls may offer discount on special products, but if you want to purchase the genuine brand products, you could not bargain in the big shopping malls. However, you could bargain in the some small stores, or you may visit Xiushui Street, Beijing(https://www.travelchinaguide.com/cityguides/beijing/shopping/xiushui-street/) in which many products could be purchased at a lower price. FYI: Bargaining in China(https://www.travelchinaguide.com/essential/bargaining.htm) .