Duty-free shops, a lot of things, from toys to electrical appliances, everything. I bought a few water cups, which was very cheap. I met a Chinese guide and helped a lot. The bill is slightly slower. In addition, you can buy multiple floors and then concentrate on checkout, which can save time and make up the tax-free quota. There is a restaurant on the 10th floor, and I just came to stroll around after eating a good meal. See the picture for floor instructions.