Actually, it can't be said that it's not cost-effective. It can only show that the price of diamonds is rising steadily almost every year, which is the value of diamond jewelry. At present, except for celebrity calligraphy and painting antiques, I'm afraid everything else is falling in price. For example, if you buy a 300,000 Audi, it will be worth 280,000 at most from a 4s shop. If you drive for three or four years, I'm afraid it's worth at most 1.5 million, which is what we eat every day, but only Kimberly diamonds, no matter how much you bought at the beginning, will be returned to you now. Changing the new style now is actually changing the style and changing the mood. You have to know that when they purchase, the price of diamonds of the same size has gone up, and you will feel that it seems uneconomical, but do you think that the purchasing power of 1000 yuan five years ago is the same as it is now? Therefore, this account should be calculated in this way, not just on the surface. I don't know if I explain it this way. Can you understand?