It doesn't matter. When choosing jade, you can listen to the sound: striking jade, natural jade sounds crisp, while fake jade is boring. Look at the color root: the color distribution of natural jadeite is uneven. Look at cleanliness: natural jadeite will not be perfect, and it will contain a small amount of fibrous crystals inside.
New Mengda jewelry, just a brand, can't be true or false. To judge whether the jade pendant is A goods, we must look at the real thing clearly before we can evaluate it. Please take some clear photos of jade in natural light and upload them. I can give you a detailed comment.
Jade in jewelry stores is usually real. Jin Woo will have a certificate issued by a national quality inspection agency. For example, the certificate says that jade is jade, not glass. If it is not marked, it is processed, indicating that this jade is natural.