Generally, as long as you write about jewelry and gold shops, you must know that you are selling gold. Are you a novice in this field? When you advertise for opening a business, others will know what you sell in your store, and every variety will be discounted. For example, gold offers a gram of 5 yuan, platinum offers a gram of 10 yuan, and silverware offers a 20% discount. . . Wait a minute. It says on the back, national chain, one fake and ten penalties.