(1) packaging identification: Zhenquanxing Daqu liquor is beautifully decorated, and the bottle body is a square prism with a big top and a small bottom. The liquor has two trademarks when it leaves the factory: one trademark has a pure white background with a V-shaped orange ribbon on the top, and the other trademark divides the background into two parts, a pure white top and a V-shaped orange bottom. The registered trademark affixed to the bottle body is a wine glass pattern, and the Chinese phonetic alphabet "Quanxing" is added on both sides. The name "Quanxing" is all seal script. The name of the factory was signed as "Quanxing Winery in Chengdu, Sichuan". The whole bottle of stickers is beautifully printed. The words "Quanxing Daqu", the award-winning badge, and the ring-shaped wheat ear pattern are all embossed, which can be perceived by hand, and the patterns and handwriting are very clear. (2) Identification of liquor quality: "Quanxing Brand" Quanxing Daqu has the characteristics of "strong cellar aroma, mellow harmony, soft and sweet, clean and refreshing entrance, strong but not bright, elegant and not light", which has been highly praised at previous wine tasting. Fake Quanxing Daqu does not have the above style at all, and most of them smell full of alcohol, which is not mellow and bitter after drinking.