No, the difference between pure gold and impure gold is so small that you can hardly see it. What you see is the influence of backlight, and the chassis of each store is different. Generally, the red chassis looks like Huang Liang, while the chassis used by Chow Tai Fook is black and doesn't look very bright. Then can you say Chow Tai Fook is impure? In fact, the purity of gold in China is the same as that in Yutai. The main thing is to choose your favorite style.