For a long time, the luxury business of jewelry and jade has always been filled with a sense of mystery for people. They are just some broken stones, how can they be sold at such high prices after being processed by someone?! Why is the price of radishes sold as high as meat? Deceiving people, right! But don't rush to conclusions. Great leader Chairman Mao once said, "Practice is the sole criterion for testing truth", "Investigation is the basis for the right to speak", and "We must combine theory with practice".