Buy back old gold materials and see the quantity; Generally speaking, if the transaction volume is large, the difference between the transaction price and the Shanghai Gold Exchange is around 10 yuan/gram. There is no need to sell that (the price may differ by 20-30 yuan/gram), and gold has value preservation. If you don't like that style, you can change it in a regular store. Of course, if you really want to sell, you can consult a regular local jewelry store. After all, the price changes every day.